freak : Idioms & Phrases
control freak
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noun someone with a compulsive desire to exert control over situations and people
WordNet
freak out
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noun a wild delusion (especially one induced by a hallucinogenic drug)
disorientation.
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verb lose one's nerve
gross out; freak.
- When he saw the accident, he freaked out
WordNet
speed freak
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noun addict who habitually uses stimulant drugs (especially amphetamines)