adj.

1. Dangerously fast: a breakneck pace.
2. Likely to cause an accident: a breakneck curve.

adjective

Characterized by great celerity: expeditious, fast, fleet, quick, rapid, speedy, swift. Informal hell-for-leather. Idioms: quick as abunnywink. See fast/slow/velocity.

Note: click on a word meaning below to see its connections and related words.

The adjective has one meaning:

Meaning #1: used of speed

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Dansk (Danish)
adj. - halsbrækkende

Nederlands (Dutch)
halsbrekend

Français (French)
adj. - fou/vertigineux (une vitesse)

Deutsch (German)
adj. - halsbrecherisch

Ελληνική (Greek)
adj. - ιλιγγιώδης, του σκοτωμού

Italiano (Italian)
pericoloso

Português (Portuguese)
adj. - muito rápido e perigoso

Русский (Russian)
головокружительный

Español (Spanish)
adj. - peligroso, arriesgado, de vértigo

Svenska (Swedish)
adj. - halsbrytande

中文（简体） (Chinese (Simplified))
要使颈骨得折断似的, 非常危险的

中文（繁體） (Chinese (Traditional))
adj. - 要使頸骨折斷似的, 非常危險的

한국어 (Korean)
adj. - 아주 빠른, 매우 위험한

日本語 (Japanese)
adj. - 危険きわまる

العربيه (Arabic)
‏(صفه) (سياقه) متهورة, (سرعه) جنونيه و خطرة‏

עברית (Hebrew)
adj. - ‮מהיר מאוד, מסוכן‬

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