A rare subdivision of the English language and cousin to both the prefix and suffix. The key difference is such that an infix goes in the middle of a normal word to add character and depth of meaning.

Common Usage:
-whole-... a-whole-nother
-fucking-... ri-fucking-diculous, abso-fucking-lutely
OMG, your pants are absofuckinglutely the most homofuckingsexual pants I've ever laid eyes on. Pwnd by infix.
by Nate B. June 1, 2006
Get the infix mug.