Definition of “headlong” - English Dictionary

british dictionary

“headlong” in American English

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headlongadjective, adverb [ not gradable ]

us /ˈhedˈlɔŋ/

very quick or quickly without considering what you are doing:

When you break up with someone, the temptation is to rush headlong into a new relationship.

Headlong also means moving forward with your head first:

a headlong plunge into the lake

(Definition of “headlong” from the Cambridge Academic Content Dictionary © Cambridge University Press)