Top Definition
An undercover bisexual. Generally this person watches a lot of gay porn and has gay/bi friends.
"I think he is an umbisexual because his hair always looks great!"
by OleanderLemon April 23, 2009
5 Words related to Umbisexual

Free Daily Email

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

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×