Crazy, insane — as a compliment or a shock.
"Un truc de ouf" means something wild or incredible. Note that "ouf" is also the plain French sound of relief, like "phew" — the two are unrelated and told apart by context.
Verlan for "fou" (crazy).
Reading a definition isn't the same as saying it to someone. Lingo Kaiava is a voice tutor set to French — it uses ouf the way locals do, corrects you in the moment, and never "fixes" the way real people actually talk into textbook French.
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