diff --git a/cmd/mt-store-cat/main.go b/cmd/mt-store-cat/main.go
index 0656bc526b..4e7d861123 100644
--- a/cmd/mt-store-cat/main.go
+++ b/cmd/mt-store-cat/main.go
@@ -81,7 +81,7 @@ func main() {
 		flag.PrintDefaults()
 		fmt.Println("Notes:")
 		fmt.Println(" * Using `*` as metric-selector may bring down your cassandra. Especially chunk-summary ignores from/to and queries all data.")
-		fmt.Println("   With great power comes great responsability")
+		fmt.Println("   With great power comes great responsibility")
 		fmt.Println(" * points that are not in the `from <= ts < to` range, are prefixed with `-`. In range has prefix of '>`")
 		fmt.Println(" * When using chunk-summary, if there's data that should have been expired by cassandra, but for some reason didn't, we won't see or report it")
 		fmt.Println(" * Doesn't automatically return data for aggregated series. It's up to you to query for id_<rollup>_<span> when appropriate")
diff --git a/cmd/mt-whisper-importer-writer/main.go b/cmd/mt-whisper-importer-writer/main.go
index 7482d0c051..9725d8eb09 100644
--- a/cmd/mt-whisper-importer-writer/main.go
+++ b/cmd/mt-whisper-importer-writer/main.go
@@ -38,7 +38,7 @@ var (
 	fakeAvgAggregates = flag.Bool(
 		"fake-avg-aggregates",
 		true,
-		"Generate sum/cnt series out of avg series to accomodate metrictank",
+		"Generate sum/cnt series out of avg series to accommodate metrictank",
 	)
 	httpEndpoint = flag.String(
 		"http-endpoint",
diff --git a/docs/tools.md b/docs/tools.md
index 45f2fc12c5..525fd4f2d2 100644
--- a/docs/tools.md
+++ b/docs/tools.md
@@ -388,7 +388,7 @@ Flags:
     	the window factor be used when creating the metric table schema (default 20)
 Notes:
  * Using `*` as metric-selector may bring down your cassandra. Especially chunk-summary ignores from/to and queries all data.
-   With great power comes great responsability
+   With great power comes great responsibility
  * points that are not in the `from <= ts < to` range, are prefixed with `-`. In range has prefix of '>`
  * When using chunk-summary, if there's data that should have been expired by cassandra, but for some reason didn't, we won't see or report it
  * Doesn't automatically return data for aggregated series. It's up to you to query for id_<rollup>_<span> when appropriate
@@ -492,7 +492,7 @@ Usage of ./mt-whisper-importer-writer:
   -exit-on-error
     	Exit with a message when there's an error (default true)
   -fake-avg-aggregates
-    	Generate sum/cnt series out of avg series to accomodate metrictank (default true)
+    	Generate sum/cnt series out of avg series to accommodate metrictank (default true)
   -http-endpoint string
     	The http endpoint to listen on (default "127.0.0.1:8080")
   -num-partitions int
diff --git a/idx/memory/memory.go b/idx/memory/memory.go
index e3a964591c..e0c9d8c5ea 100644
--- a/idx/memory/memory.go
+++ b/idx/memory/memory.go
@@ -142,7 +142,7 @@ func (m *MemoryIdx) Load(defs []schema.MetricDefinition) int {
 			continue
 		}
 		m.add(def)
-		// as we are loading the metricDefs from a persistant store, set the lastSave
+		// as we are loading the metricDefs from a persistent store, set the lastSave
 		// to the lastUpdate timestamp.  This wont exactly match the true lastSave Timstamp,
 		// but it will be close enough and it will always be true that the lastSave was at
 		// or after this time.  For metrics that are sent at or close to real time (the typical
diff --git a/mdata/aggmetric.go b/mdata/aggmetric.go
index bbea922394..14482700d0 100644
--- a/mdata/aggmetric.go
+++ b/mdata/aggmetric.go
@@ -41,7 +41,7 @@ type AggMetric struct {
 // NewAggMetric creates a metric with given key, it retains the given number of chunks each chunkSpan seconds long
 // it optionally also creates aggregations with the given settings
 // the 0th retention is the native archive of this metric. if there's several others, we create aggregators, using agg.
-// it's the callers responsability to make sure agg is not nil in that case!
+// it's the callers responsibility to make sure agg is not nil in that case!
 func NewAggMetric(store Store, cachePusher cache.CachePusher, key string, retentions conf.Retentions, agg *conf.Aggregation) *AggMetric {
 
 	// note: during parsing of retentions, we assure there's at least 1.