diff --git a/README.md b/README.md
index 216ac9b..c98c350 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ pash
     * [How do I set the password length?](#how-do-i-set-the-password-length)
     * [How do I change the password store location?](#how-do-i-change-the-password-store-location)
     * [How do I change the clipboard tool?](#how-do-i-change-the-clipboard-tool)
+    * [How do I change the clipboard timeout?](#how-do-i-change-the-clipboard-timeout)
     * [How do I change the password generation pattern?](#how-do-i-change-the-password-generation-pattern)
     * [How do I rename an entry?](#how-do-i-rename-an-entry)
     * [How can I migrate from `pass` to `pash`?](#how-can-i-migrate-from-pass-to-pash)
@@ -61,11 +62,12 @@ COMMANDS
 
 OPTIONS
 
-Using a key pair: export PASH_KEYID=XXXXXXXX
-Password length:  export PASH_LENGTH=50
-Password pattern: export PASH_PATTERN=_A-Z-a-z-0-9
-Store location:   export PASH_DIR=~/.local/share/pash
-Clipboard tool:   export PASH_CLIP='xclip -selection clipboard'
+Using a key pair:  export PASH_KEYID=XXXXXXXX
+Password length:   export PASH_LENGTH=50
+Password pattern:  export PASH_PATTERN=_A-Z-a-z-0-9
+Store location:    export PASH_DIR=~/.local/share/pash
+Clipboard tool:    export PASH_CLIP='xclip -sel c'
+Clipboard timeout: export PASH_TIMEOUT=15 ('off' to disable)
 ```
 
 ## FAQ
@@ -129,11 +131,26 @@ PASH_DIR=/mnt/drive/pash pash list
 Set the environment variable `PASH_CLIP` to a command.
 
 ```sh
-# Default: 'xclip -selection clipboard'.
-export PASH_CLIP='xclip -selection clipboard'
+# Default: 'xclip -sel c'.
+export PASH_CLIP='xclip -sel c'
 
 # This can also be used as a one-off.
-PASH_CLIP='xclip -selection clipboard' pash copy github
+PASH_CLIP='xclip -sel c' pash copy github
+```
+
+### How do I change the clipboard timeout?
+
+Set the environment variable `PASH_TIMEOUT` to a valid `sleep` interval or `off` to disable the feature.
+
+```sh
+# Default: '15'
+export PASH_TIMEOUT=15
+
+# Disable timeout.
+export PASH_TIMEOUT=off
+
+# This can also be used as a one-off.
+PASH_TIMEOUT=5 pash copy github
 ```
 
 ### How do I change the password generation pattern?
diff --git a/pash b/pash
index 0a7b926..62a8dd4 100755
--- a/pash
+++ b/pash
@@ -67,7 +67,22 @@ pw_copy() {
     # Disable warning against word-splitting as it is safe
     # and intentional (globbing is disabled).
     # shellcheck disable=2086
-    pw_show "$1" | ${PASH_CLIP:-xclip -selection clipboard}
+    : "${PASH_CLIP:=xclip -sel c}"
+
+    # Wait in the background for the password timeout and
+    # clear the clipboard when the timer runs out.
+    #
+    # If the 'sleep' fails, kill the script. This is the
+    # simplest method of aborting from a subshell.
+    [ "$PASH_TIMEOUT" != off ] && {
+        printf 'Clearing clipboard in "%s" seconds.\n' \
+            "${PASH_TIMEOUT:=15}"
+
+        sleep "$PASH_TIMEOUT" || kill 0
+        $PASH_CLIP </dev/null
+    } &
+
+    pw_show "$1" | $PASH_CLIP
 }
 
 pw_list() {
@@ -128,11 +143,12 @@ pash 2.1.0 - simple password manager.
 => [l]ist        - List all entries.
 => [s]how [name] - Show password for an entry.
 
-Using a key pair: export PASH_KEYID=XXXXXXXX
-Password length:  export PASH_LENGTH=50
-Password pattern: export PASH_PATTERN=_A-Z-a-z-0-9
-Store location:   export PASH_DIR=~/.local/share/pash
-Clipboard tool:   export PASH_CLIP='xclip -selection clipboard'
+Using a key pair:  export PASH_KEYID=XXXXXXXX
+Password length:   export PASH_LENGTH=50
+Password pattern:  export PASH_PATTERN=_A-Z-a-z-0-9
+Store location:    export PASH_DIR=~/.local/share/pash
+Clipboard tool:    export PASH_CLIP='xclip -sel c'
+Clipboard timeout: export PASH_TIMEOUT=15 ('off' to disable)
 "
 exit 1
 }