8 files changed, 8 insertions, 8 deletions
diff --git a/src/libstd/ffi/c_str.rs b/src/libstd/ffi/c_str.rs
index db64d41011c..7392a153e3b 100644
--- a/src/libstd/ffi/c_str.rs
+++ b/src/libstd/ffi/c_str.rs
@@ -830,7 +830,7 @@ impl CStr {
     ///
     /// It is your responsibility to make sure that the underlying memory is not
     /// freed too early. For example, the following code will cause undefined
-    /// behaviour when `ptr` is used inside the `unsafe` block:
+    /// behavior when `ptr` is used inside the `unsafe` block:
     ///
     /// ```no_run
     /// use std::ffi::{CString};
diff --git a/src/libstd/ffi/os_str.rs b/src/libstd/ffi/os_str.rs
index d62e3e905e3..a40a9329ed9 100644
--- a/src/libstd/ffi/os_str.rs
+++ b/src/libstd/ffi/os_str.rs
@@ -123,7 +123,7 @@ impl OsString {
 
     /// Creates a new `OsString` with the given capacity.
     ///
-    /// The string will be able to hold exactly `capacity` lenth units of other
+    /// The string will be able to hold exactly `capacity` length units of other
     /// OS strings without reallocating. If `capacity` is 0, the string will not
     /// allocate.
     ///
diff --git a/src/libstd/io/cursor.rs b/src/libstd/io/cursor.rs
index d986021a18b..32a92145aaf 100644
--- a/src/libstd/io/cursor.rs
+++ b/src/libstd/io/cursor.rs
@@ -69,7 +69,7 @@ use io::{self, Initializer, SeekFrom, Error, ErrorKind};
 /// // now let's write a test
 /// #[test]
 /// fn test_writes_bytes() {
-///     // setting up a real File is much more slow than an in-memory buffer,
+///     // setting up a real File is much slower than an in-memory buffer,
 ///     // let's use a cursor instead
 ///     use std::io::Cursor;
 ///     let mut buff = Cursor::new(vec![0; 15]);
diff --git a/src/libstd/sync/once.rs b/src/libstd/sync/once.rs
index bb18fe95a9d..403685a4b8e 100644
--- a/src/libstd/sync/once.rs
+++ b/src/libstd/sync/once.rs
@@ -387,7 +387,7 @@ impl Drop for Finish {
 impl OnceState {
     /// Returns whether the associated [`Once`] has been poisoned.
     ///
-    /// Once an initalization routine for a [`Once`] has panicked it will forever
+    /// Once an initialization routine for a [`Once`] has panicked it will forever
     /// indicate to future forced initialization routines that it is poisoned.
     ///
     /// [`Once`]: struct.Once.html
diff --git a/src/libstd/sys/redox/args.rs b/src/libstd/sys/redox/args.rs
index 6e44ad705fe..59ae2a74a6d 100644
--- a/src/libstd/sys/redox/args.rs
+++ b/src/libstd/sys/redox/args.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Global initialization and retreival of command line arguments.
+//! Global initialization and retrieval of command line arguments.
 //!
 //! On some platforms these are stored during runtime startup,
 //! and on some they are retrieved from the system on demand.
diff --git a/src/libstd/sys/unix/args.rs b/src/libstd/sys/unix/args.rs
index bbdcb5d3616..810d2d40c05 100644
--- a/src/libstd/sys/unix/args.rs
+++ b/src/libstd/sys/unix/args.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Global initialization and retreival of command line arguments.
+//! Global initialization and retrieval of command line arguments.
 //!
 //! On some platforms these are stored during runtime startup,
 //! and on some they are retrieved from the system on demand.
diff --git a/src/libstd/thread/mod.rs b/src/libstd/thread/mod.rs
index 3cd9cf7727c..83feb595bce 100644
--- a/src/libstd/thread/mod.rs
+++ b/src/libstd/thread/mod.rs
@@ -560,7 +560,7 @@ pub fn current() -> Thread {
 /// implementing low-level shared resources or synchronization primitives.
 ///
 /// However programmers will usually prefer to use, [`channel`]s, [`Condvar`]s,
-/// [`Mutex`]es or [`join`] for their synchronisation routines, as they avoid
+/// [`Mutex`]es or [`join`] for their synchronization routines, as they avoid
 /// thinking about thread scheduling.
 ///
 /// Note that [`channel`]s for example are implemented using this primitive.
diff --git a/src/libstd/time/mod.rs b/src/libstd/time/mod.rs
index e8eb4abaa40..5b893505b34 100644
--- a/src/libstd/time/mod.rs
+++ b/src/libstd/time/mod.rs
@@ -112,7 +112,7 @@ pub struct Instant(time::Instant);
 ///            println!("{}", elapsed.as_secs());
 ///        }
 ///        Err(e) => {
-///            // an error occured!
+///            // an error occurred!
 ///            println!("Error: {:?}", e);
 ///        }
 ///    }