diff --git a/ci/codespell.ignores b/ci/codespell.ignores
index c625d1b17a5..af408d0c38a 100644
--- a/ci/codespell.ignores
+++ b/ci/codespell.ignores
@@ -36,3 +36,6 @@ laf
 cacl
 chk
 falloc
+rin
+assertIn
+checkin
diff --git a/src/bio/bio_wal.c b/src/bio/bio_wal.c
index 341c893f898..2a3d828f4b8 100644
--- a/src/bio/bio_wal.c
+++ b/src/bio/bio_wal.c
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2018-2023 Intel Corporation.
+ * (C) Copyright 2018-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -577,7 +577,7 @@ fill_trans_blks(struct bio_meta_context *mc, struct bio_sglist *bsgl, struct ume
 			left = blk_sz - entry_blk.tb_off;
 			/* Current entry block is full, move to next entry block */
 			if (left < entry_sz) {
-				/* Zeoring left bytes for csum calculation */
+				/* Zeroing left bytes for csum calculation */
 				if (left > 0)
 					memset(entry_blk.tb_buf + entry_blk.tb_off, 0, left);
 				next_trans_blk(bsgl, &entry_blk);
diff --git a/src/client/array/dc_array.c b/src/client/array/dc_array.c
index b96bdfa7c94..f15892bb213 100644
--- a/src/client/array/dc_array.c
+++ b/src/client/array/dc_array.c
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2016-2023 Intel Corporation.
+ * (C) Copyright 2016-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -1646,7 +1646,7 @@ dc_array_io(daos_handle_t array_oh, daos_handle_t th,
 				/*
 				 * verify that the dkey is the same as the one we are working on
 				 * given the array index, and also compute the number of records
-				 * left in the dkey and the record indexin the dkey.
+				 * left in the dkey and the record index in the dkey.
 				 */
 				rc = compute_dkey(array, array_idx, &num_records, &record_i,
 						  &dkey_val);
diff --git a/src/client/dfuse/ops/readdir.c b/src/client/dfuse/ops/readdir.c
index b8d309758e8..3b7cabf01be 100644
--- a/src/client/dfuse/ops/readdir.c
+++ b/src/client/dfuse/ops/readdir.c
@@ -388,7 +388,7 @@ dfuse_do_readdir(struct dfuse_info *dfuse_info, fuse_req_t req, struct dfuse_obj
 		/* If there is no seekdir but there is valid cache data then use the cache.
 		 *
 		 * Directory handles may not have up-to-date values for doh_rd_nextc in some cases
-		 * so perform a seek here if necessairy.
+		 * so perform a seek here if necessary.
 		 */
 		struct dfuse_readdir_c *drc;
 		size_t                  written     = 0;
diff --git a/src/control/security/testdata/certs/source.txt b/src/control/security/testdata/certs/source.txt
index 9bb8e83e091..dc96fa43aff 100644
--- a/src/control/security/testdata/certs/source.txt
+++ b/src/control/security/testdata/certs/source.txt
@@ -1 +1 @@
-This tile is here to act as a source file for generating hash and signiture files to test the sign and verify signature functionality.
+This tile is here to act as a source file for generating hash and signature files to test the sign and verify signature functionality.
diff --git a/src/engine/module.c b/src/engine/module.c
index 4ee74235ff5..d43387573e4 100644
--- a/src/engine/module.c
+++ b/src/engine/module.c
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2016-2022 Intel Corporation.
+ * (C) Copyright 2016-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -246,7 +246,7 @@ dss_module_init_all(uint64_t *mod_facs)
 
 	/*
 	 * first register global tls accessible to all modules,
-	 * it'll be first initialized and last finialized.
+	 * it'll be first initialized and last finalized.
 	 */
 	dss_register_key(&daos_srv_modkey);
 
diff --git a/src/include/daos/tse.h b/src/include/daos/tse.h
index b771037e78d..627fe3ad15c 100644
--- a/src/include/daos/tse.h
+++ b/src/include/daos/tse.h
@@ -40,7 +40,7 @@ typedef struct tse_task {
 
 /** struct for a schedule object that is used for tracking a number of tasks */
 typedef struct {
-	/** culmulative result of all task operations - valid after schedule completion */
+	/** cumulative result of all task operations - valid after schedule completion */
 	int		ds_result;
 
 	/** user data associated with the scheduler (completion cb data, etc.) */
diff --git a/src/include/daos_api.h b/src/include/daos_api.h
index 005f315add7..eb6e11e93ff 100644
--- a/src/include/daos_api.h
+++ b/src/include/daos_api.h
@@ -96,7 +96,7 @@ daos_tx_commit(daos_handle_t th, daos_event_t *ev);
  * Create a read-only transaction from a snapshot. This does not create the
  * snapshot, but only a read transaction to be able to read from a snapshot
  * created with daos_cont_create_snap. If the user passes an epoch that is not
- * snapshoted, or the snapshot was deleted, reads using that transaction may
+ * snapshotted, or the snapshot was deleted, reads using that transaction may
  * get undefined results.
  *
  * \param[in]	coh	Container handle.
@@ -190,7 +190,7 @@ daos_anchor_init(daos_anchor_t *anchor, __attribute__((unused)) unsigned int opt
  * Finalizie an iteratror anchor, free resources allocated
  * during the iteration.
  *
- * \param[in]	anchor	Anchor to be finialized
+ * \param[in]	anchor	Anchor to be finalized
  */
 static inline void
 daos_anchor_fini(__attribute__((unused)) daos_anchor_t *anchor)
diff --git a/src/include/daos_errno.h b/src/include/daos_errno.h
index d8521461663..ad3bf93e5b7 100644
--- a/src/include/daos_errno.h
+++ b/src/include/daos_errno.h
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2016-2023 Intel Corporation.
+ * (C) Copyright 2016-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -190,7 +190,7 @@ extern "C" {
 	ACTION(DER_FETCH_AGAIN, Fetch again)                                                       \
 	/** Hit uncertain DTX, may need to try with other replica. */                              \
 	ACTION(DER_TX_UNCERTAIN, TX status is uncertain)                                           \
-	/** Communicatin issue with agent. */                                                      \
+	/** Communication issue with agent. */                                                      \
 	ACTION(DER_AGENT_COMM, Agent communication error)                                          \
 	/** ID mismatch */                                                                         \
 	ACTION(DER_ID_MISMATCH, ID mismatch)                                                       \
diff --git a/src/include/daos_srv/bio.h b/src/include/daos_srv/bio.h
index 26b15c4aa13..f0400c764c9 100644
--- a/src/include/daos_srv/bio.h
+++ b/src/include/daos_srv/bio.h
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2018-2023 Intel Corporation.
+ * (C) Copyright 2018-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -433,7 +433,7 @@ int bio_nvme_init(const char *nvme_conf, int numa_node, unsigned int mem_size,
 		  unsigned int hugepage_size, unsigned int tgt_nr, bool bypass);
 
 /**
- * Global NVMe finilization.
+ * Global NVMe finalization.
  *
  * \return		N/A
  */
diff --git a/src/include/daos_srv/dtx_srv.h b/src/include/daos_srv/dtx_srv.h
index e62dbda43eb..f7be21b2e0e 100644
--- a/src/include/daos_srv/dtx_srv.h
+++ b/src/include/daos_srv/dtx_srv.h
@@ -118,7 +118,7 @@ struct dtx_handle {
 
 	/* The count the DTXs in the dth_dti_cos array. */
 	uint32_t			 dth_dti_cos_count;
-	/* The array of the DTXs for Commit on Share (conflcit). */
+	/* The array of the DTXs for Commit on Share (conflict). */
 	struct dtx_id			*dth_dti_cos;
 	/** Pointer to the DTX entry in DRAM. */
 	void				*dth_ent;
diff --git a/src/object/cli_shard.c b/src/object/cli_shard.c
index c7f4fa11a3c..ab60646cf49 100644
--- a/src/object/cli_shard.c
+++ b/src/object/cli_shard.c
@@ -2288,7 +2288,7 @@ obj_shard_coll_query_cb(tse_task_t *task, void *data)
 
 	/*
 	 * Merge (L4) the results from engine that may be single shard or aggregated results from
-	 * multuple shards from single or multiple engines.
+	 * multiple shards from single or multiple engines.
 	 */
 	D_SPIN_LOCK(&cb_args->obj->cob_spin);
 	rc = daos_obj_query_merge(&oqma);
diff --git a/src/object/srv_coll.c b/src/object/srv_coll.c
index 3481f2fcd21..2783756df53 100644
--- a/src/object/srv_coll.c
+++ b/src/object/srv_coll.c
@@ -519,7 +519,7 @@ obj_coll_query_agg_cb(struct dtx_leader_handle *dlh, void *arg)
 	/*
 	 * If keys_allocated is not set on current engine, then query for current engine is either
 	 * not triggered because of some earlier failure or the query on current engine hit trouble
-	 * and cannot copy the keys. Under such cases, cleanup RPCs instead of merge query resutls.
+	 * and cannot copy the keys. Under such cases, cleanup RPCs instead of merge query results.
 	 */
 	if (unlikely(!otqa->otqa_keys_allocated)) {
 		cleanup = true;
diff --git a/src/object/srv_obj.c b/src/object/srv_obj.c
index 82d8e3155de..59a7c41a02f 100644
--- a/src/object/srv_obj.c
+++ b/src/object/srv_obj.c
@@ -2177,7 +2177,7 @@ obj_ioc_begin_lite(uint32_t rpc_map_ver, uuid_t pool_uuid,
 		 *	2. The current replica was NOT the old leader if
 		 *	   with the old pool map version. But it becomes
 		 *	   the new leader with the new pool map version.
-		 *	   In the subsequent modificaiton, it may hit
+		 *	   In the subsequent modification, it may hit
 		 *	   some 'prepared' DTX when make availability
 		 *	   check, it will return -DER_INPROGRESS that
 		 *	   will cause client to retry. It is possible
diff --git a/src/placement/tests/jump_map_place_obj.c b/src/placement/tests/jump_map_place_obj.c
index de1b793bc7a..158292e2e34 100644
--- a/src/placement/tests/jump_map_place_obj.c
+++ b/src/placement/tests/jump_map_place_obj.c
@@ -1119,7 +1119,7 @@ one_is_being_reintegrated(void **state)
 		 * so find_reint() and find_addition() might both find
 		 * some candidates if there are UP targets in the pool map,
 		 * no matter these UP targets are from NEW or DOWNOUT.
-		 * But reintegration and extening will never happen at the
+		 * But reintegration and extending will never happen at the
 		 * same time, so it is ok for now. To satisfy the test,
 		 * let's set both reint and new number as 1 for now.
 		 */
diff --git a/src/tests/ftest/util/pool_security_test_base.py b/src/tests/ftest/util/pool_security_test_base.py
index 38536089a39..ac7de7db866 100644
--- a/src/tests/ftest/util/pool_security_test_base.py
+++ b/src/tests/ftest/util/pool_security_test_base.py
@@ -41,7 +41,7 @@ def modify_acl_file_entry(self, file_name, entry, new_entry):
                 line = line.split("\n")[0]
                 if line == entry:
                     line = new_entry
-                    self.log.info("==>replaceing \n %s  with\n %s", entry, new_entry)
+                    self.log.info("==>replacing \n %s  with\n %s", entry, new_entry)
                 new_permissions = new_permissions + line + "\n"
             if entry is None:
                 new_permissions = new_permissions + new_entry + "\n"
diff --git a/src/tests/suite/daos_base_tx.c b/src/tests/suite/daos_base_tx.c
index d4d30ef7b05..5752ade4fb8 100644
--- a/src/tests/suite/daos_base_tx.c
+++ b/src/tests/suite/daos_base_tx.c
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2019-2023 Intel Corporation.
+ * (C) Copyright 2019-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -294,7 +294,7 @@ dtx_fetch_committable(void **state, bool punch)
 
 	/* Reset fail_loc, repeat fetch from any replica. If without specifying
 	 * the replica, and if fetch from non-leader hits non-committed DTX, it
-	 * will retry with leader, finially, the expected data will be returned
+	 * will retry with leader, finally, the expected data will be returned
 	 * from the leader replica.
 	 */
 	daos_fail_loc_set(0);
diff --git a/src/tests/suite/daos_pipeline.c b/src/tests/suite/daos_pipeline.c
index b339e40b353..7058ef0ba47 100644
--- a/src/tests/suite/daos_pipeline.c
+++ b/src/tests/suite/daos_pipeline.c
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2016-2023 Intel Corporation.
+ * (C) Copyright 2016-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -1500,7 +1500,7 @@ run_array_pipeline(daos_handle_t coh, daos_handle_t oh, daos_pipeline_t *pipelin
 
 	/** until anchor is EOF we call pipeline run */
 	while (!daos_anchor_is_eof(&anchor)) {
-		/** restorin value for in/out parameters */
+		/** restoring value for in/out parameters */
 		nr_kds  = 64; /** trying to read 64 in each iteration */
 		nr_iods = 1;
 
diff --git a/src/vos/vos_layout.h b/src/vos/vos_layout.h
index ca7f26ad540..72459544c27 100644
--- a/src/vos/vos_layout.h
+++ b/src/vos/vos_layout.h
@@ -1,5 +1,5 @@
 /**
- * (C) Copyright 2016-2023 Intel Corporation.
+ * (C) Copyright 2016-2024 Intel Corporation.
  *
  * SPDX-License-Identifier: BSD-2-Clause-Patent
  */
@@ -82,7 +82,7 @@ enum vos_gc_type {
 /** Lowest supported durable format version */
 #define POOL_DF_VER_1                           23
 
-/** Individual version specific featuers are assigned to a release specific durable
+/** Individual version specific features are assigned to a release specific durable
  * format version number.  This allows us to add multiple features in a release cycle
  * while keeping checks related to the feature rather than the more ambiguous version
  * number.   Each new feature should be assigned to the latest VOS durable format.