The only contraction that is of 4 words, "I am going to." Either that or a contraction of 2 contractions, "I'm gonna." (1.)
Not to be confused with "I'm a..." (2.)
Synonyms for I'mma
On this page, you will find 30 slang terms related to i'mma. Some of the top words include: ima, y'all, i'mo, I'ma, Meither, and 25 more.