diff --git a/cli/rt/99_main.js b/cli/rt/99_main.js
index d7cf50588e..b29d1a4f2d 100644
--- a/cli/rt/99_main.js
+++ b/cli/rt/99_main.js
@@ -63,7 +63,7 @@ delete Object.prototype.__proto__;
     opCloseWorker();
   }
 
-  // TODO(bartlomieju): remove these funtions
+  // TODO(bartlomieju): remove these functions
   // Stuff for workers
   const onmessage = () => {};
   const onerror = () => {};
diff --git a/core/core_test.js b/core/core_test.js
index 7821f93a6b..28bc7d2bf5 100644
--- a/core/core_test.js
+++ b/core/core_test.js
@@ -28,7 +28,7 @@ function main() {
   const h = q.head();
   assert(h > 0);
 
-  // This record's len is not divisble by
+  // This record's len is not divisible by
   // 4 so after pushing it to the queue,
   // next record offset should be aligned to 4.
   let r = new Uint8Array([1, 2, 3, 4, 5]);
diff --git a/core/modules.rs b/core/modules.rs
index e12699ca91..f1f540b68a 100644
--- a/core/modules.rs
+++ b/core/modules.rs
@@ -387,7 +387,7 @@ impl ModuleNameMap {
     }
   }
 
-  /// Insert a name assocated module id.
+  /// Insert a name associated module id.
   pub fn insert(&mut self, name: String, id: ModuleId) {
     self.inner.insert(name, SymbolicModule::Mod(id));
   }
diff --git a/core/normalize_path.rs b/core/normalize_path.rs
index 0124aedc70..e444af9918 100644
--- a/core/normalize_path.rs
+++ b/core/normalize_path.rs
@@ -4,7 +4,7 @@ use std::path::Component;
 use std::path::Path;
 use std::path::PathBuf;
 
-/// Normalize all itermediate components of the path (ie. remove "./" and "../" components).
+/// Normalize all intermediate components of the path (ie. remove "./" and "../" components).
 /// Similar to `fs::canonicalize()` but doesn't resolve symlinks.
 ///
 /// Taken from Cargo
diff --git a/core/ops.rs b/core/ops.rs
index b7507156cd..3351b6a5b2 100644
--- a/core/ops.rs
+++ b/core/ops.rs
@@ -221,7 +221,7 @@ fn json_serialize_op_result(
 }
 
 /// Return map of resources with id as key
-/// and string representaion as value.
+/// and string representation as value.
 ///
 /// This op must be wrapped in `json_op_sync`.
 pub fn op_resources(