A versatile slang term based on the luxury fashion brand meaning okay/good/great/awesome/fresh/etc. Originally used in the streets but now popularized by the masses. Sometimes abbreviated "gooch" if you're an expert in its use. To be all Gucci is a wonderful thing indeed.

to tell someone to calm down and relax.

A slang-ish phrase used to mean,
Good
Great
Awesome
Cool
Chill
Etc.

Good, chill, cool, awesome...
Comes from Gucci as in the fashion label... because Gucci is rich and ballin' therefore he is good, cool, and just pimpin'

overpriced things that people obsess about nowadays that noone actually needs but they say they do.

to refer to one as being ok, good, doing fine.

To also tell someone everything is fine.

To refer to someone as dressing nice but not dressed in the brand Gucci.

A fashion comany started by Guccio Gucci in the late 1800s in Italy. It is now an international fashion company and is the benchmark for high-end designer clothes. Their clothes are now designed by Tom Ford. They are the makers of many lines including fragrance, jewelry, and watches. Is most commonly known for their 'double G' logo. Recently, because gucci clothing is of such high quality a bunch of ghetto idiots decided to make a term out of this prestigious name meaning cool or flashy.