diff --git a/basis/grouping/grouping-docs.factor b/basis/grouping/grouping-docs.factor
index c91eb231ab..44da43a76b 100644
--- a/basis/grouping/grouping-docs.factor
+++ b/basis/grouping/grouping-docs.factor
@@ -26,7 +26,7 @@ ARTICLE: "grouping" "Groups and clumps"
             "{ 1 2 3 4 } dup" "2 <groups> concat sequence= ." "t"
         }
     }
-    { "With clumps, collecting the first element of each subsequence but the last one, together with the last subseqence, yields the original sequence:"
+    { "With clumps, collecting the first element of each subsequence but the last one, together with the last subsequence, yields the original sequence:"
         { $unchecked-example
             "USING: grouping ;"
             "{ 1 2 3 4 } 2 clump ." "{ { 1 2 } { 2 3 } { 3 4 } }"
diff --git a/core/classes/algebra/algebra-docs.factor b/core/classes/algebra/algebra-docs.factor
index f913ca5fec..c4c65c6209 100644
--- a/core/classes/algebra/algebra-docs.factor
+++ b/core/classes/algebra/algebra-docs.factor
@@ -50,7 +50,7 @@ HELP: class<=
 { $notes "Classes are partially ordered. This means that if " { $snippet "class1 <= class2" } " and " { $snippet "class2 <= class1" } ", then " { $snippet "class1 = class2" } ". Also, if " { $snippet "class1 <= class2" } " and " { $snippet "class2 <= class3" } ", then " { $snippet "class1 <= class3" } "." } ;
 
 HELP: sort-classes
-{ $values { "seq" "a sequence of class" } { "newseq" "a new seqence of classes" } }
+{ $values { "seq" "a sequence of class" } { "newseq" "a new sequence of classes" } }
 { $description "Outputs a linear sort of a sequence of classes. Larger classes come before their subclasses." } ;
 
 HELP: class-or
diff --git a/core/parser/parser-docs.factor b/core/parser/parser-docs.factor
index 6889f497e1..f7efa988f1 100644
--- a/core/parser/parser-docs.factor
+++ b/core/parser/parser-docs.factor
@@ -215,7 +215,7 @@ HELP: parse-fresh
 { $errors "Throws a parse error if the input is malformed." } ;
 
 HELP: filter-moved
-{ $values { "assoc1" assoc } { "assoc2" assoc } { "seq" "an seqence of definitions" } }
+{ $values { "assoc1" assoc } { "assoc2" assoc } { "seq" "an sequence of definitions" } }
 { $description "Removes all definitions from " { $snippet "assoc2" } " which are in " { $snippet "assoc1" } " or are are no longer present in the current " { $link file } "." } ;
 
 HELP: forget-smudged