名詞 freak out:

1. a wild delusion (especially one induced by a hallucinogenic drug)
   同義詞：disorientation

動詞 freak out:

1. lose one's nerve
   同義詞：freak, gross out

1. This ordinary quiet guy just freaked out and shot ten people.
   這個平時溫和的家伙簡直發(fā)瘋了，開槍打死了十個人。
2. She used to be the most correct person, but then suddenly last year she decided to freak out.
   她曾經常是最合適的人選，可是去年她突然變得頹廢起來。