Top Definition
to quickly and easily make things up, (particularly when it comes to the definitions of words); bullshit out of reflex

John: People who use big words to describe simple things are sesquipedalian assholes.

Nicole: What does sesquipedalian mean?

Ern: Isn't it like a 70 year old squid?

Harvin: Erin, ad-glib much?

John: Ern, your retarded.
by Ern Lee Ermey September 14, 2008
5 Words related to ad-glib

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.