A combination of both English and Spanish origin, the word Tranquilin integrates the two words, Tranquil and' Chillin'.

Tranquilin is to be free from agitation of mind or spirit. Relaxed.

Chillin' is slang for relaxing, or in the Spanish origin, to be free from agitation of mind or spirit.
That nigga was tranquilin like a mo'f*cka'

Adria - "Yo man what are you doing tonight?"

Homosexual friend, "Nothing, just tranquilin, watching sex in the city, you know, the ush...
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