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Lose one's cool

Idiomatic Phrase
Pronunciation

Understanding ARPABET Pronunciation

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The pronunciation guide uses the ARPABET phonetic system—the same system used in speech recognition and text-to-speech applications.

Vowel Examples:
AE1 = cat, bat
EH1 = bed, head
IY1 = see, me
OW1 = go, boat
UW1 = boot, do
Stress Numbers:
0 = no stress (unstressed)
1 = primary stress (loud)
2 = secondary stress (medium)
Example:
AH0 TH IY1 N AH0
= a-THEE-na (Athena)

The stressed syllable (marked with 1) is pronounced louder and clearer than others.

Quick Definition

Lose one's cool means to become angry, agitated, or lose composure; in character dynamics, it reveals vulnerability, frustration, or breaking points, contrasting with expected restraint or professionalism.

Detailed Definition
Lose one's cool means to lose composure, self-control, or emotional restraint, usually through anger, fear, or pressure. In poetry, the idiom works through the contrast between coolness as calm and heat as passion. It can describe a speaker who erupts after trying to remain controlled, or a society whose polished surface cracks. The phrase is useful in modern dramatic voices and poems about repression. It may be comic, embarrassing, frightening, or liberating, depending on what the loss of control reveals.
Example
Example in poetry:
A dramatic monologue might show the speaker losing his cool when the accusation strikes too near the truth; In comic verse, the baker loses her cool when the wedding cake slides to the floor; The phrase lose one's cool means to lose calmness or self-control; A poet can use it to turn tension into sudden action.
Additional Notes
Lose one’s cool means lose composure, usually through anger, panic, or frustration. The temperature metaphor is central: self-control is imagined as coolness, while emotional excess becomes heat. In poetry, it can describe quarrels, public pressure, jealousy, grief, or comic irritation. It pairs well with images of boiling blood, hot collars, steam, and cracked masks. Students should ask whether losing cool is failure, honesty, or liberation.
Also Known As
lose temper
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