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потерявший голову stresses
gen.	out of one's head; infatuated (тж. см. be infatuated with: As the weeks passed he became totally infatuated with her. cambridge.org Taras)
slang	gone; hip
потерять голову
gen.	be off one's onion; raise the wind; not to know if one is coming or going; not to know whether one is coming or going; lose head; go daft; climb the wall (Anglophile); lose one's mind (Aly19); go off head; choke up; swoon; loose head; wits; panic; swollen; be heads over heals (bigmaxus)
Gruzovik	loose one's wits; lose one's head
Игорь Миг	be frantic; tie oneself into knots (от страха, переживаний, сложностей, проблем); go ballistic
amer., slang	fall apart (от восторга, страха и т.п.)
fig.	lose one's head
idiom.	climb the walls (Alex_Odeychuk); be head over heels in love (от кого-либо Taras); run around like a chicken with its head cut off (VLZ_58)
inf.	choke; flip (из-за чего-либо)
Makarov.	lose one's head (от избытка чувств); get into a flap; go haywire; haywire
Makarov., slang	flip over
Makarov., slang, amer.	fall apart (от восторга страха и т. п.)
slang	choke choke in choke up; flip

потерявший голову: 53 phrases in 5 subjects

General	23
Idiomatic	1
Informal	8
Makarov	19
Slang	2