look up any word, like ratchet:
 
1.
Getting extremely angry at someone or something, resembling a great storm.
Danny: Niccy went tempestuous on me yesterday...
Chris: Shit man what happenned?
Danny: I was just making a joke and then she started getting all tempestuous on me, I thought I was going to die.
Chris: What did she do?
Danny: Well her arms were flailing around and i almost got knocked out.
by Please dont take offence February 10, 2012
 
2.
of, relating to, or resembling a tempest
Sam and Rachel have always had a tempestuous relationship—one minute fast friends, the next snarling and at each other's throats.
by Your Grim Reaper June 24, 2003
 
3.
something you would think is incredibly random, but yet AMAZINGLY COOL at the same time, its the good kind of weird & different
wow, the purple banana is sure tempestuous!!!
by babybreath June 21, 2008