Nasty, or just plain unsettling
Nigga that shit in Portugal was iffy, we fucked with the wrong homies there.
When you think a girl likes you, or if you are just picking up random things as signs and getting boners for no good reason.
/IFfe/
noun
1. A female who is on the spectrum of thicc and fat but not quite either one; One, particularly females, who's proportions do not quite fit into a stagnant classification of body type.
adjective
1. of being a thiccfat bitch.
" I mean she ain't fat, but she ain't thicc bro', she a iffy."
not being able to discribe how a person is and why you don’t like how they are, just a person that is so bad they have no meaning
damn that bitch is iffy