Meaning & use

dive in head first

phrase·Everyday

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UK/daɪv ɪn ˌhed ˈfɜːst/
US/daɪv ɪn ˌhed ˈfɜːrst/

Meanings

  1. phraseintransitive

    to jump into water with your head entering before your body

    Grammar: No object; often followed by into: dive in head first into the sea.

    Patterns

    • dive in head first into something

    He dived in head first and surfaced a few seconds later.

    The instructor warned us not to dive in head first where the water is shallow.

    She dived in head first from the side of the boat.

  2. phraseintransitivefigurative

    to begin something new with great energy and without hesitation or caution

    Grammar: No object; usually followed by into: dive in head first into a challenge.

    Patterns

    • dive in head first into something

    When they offered her the promotion, she dived in head first.

    He dived in head first into the startup, working nights and weekends.

    Don't dive in head first without reading the contract first.

Common combinations

dive in head first into
They dived in head first into the new project.
dive in head first from
The boy dived in head first from the rocks.
dive in head first off
She dived in head first off the pier.

Synonyms and how they differ

plunge in
Plunge in often means to start something quickly without preparation; it can be used with or without 'head first' and is slightly more informal.
jump in
Jump in means to enter water or start something quickly, but it does not specify the position of the head.

Opposites

dive in feet first

Word family

dive verb
To jump into water, usually head first.
diving noun
The sport or activity of jumping into water.

Commonly confused: dive in head first or dive headfirst?

dive in head first vs dive headfirst

This is the same phrase with 'headfirst' written as one word. Both are correct and mean the same thing.

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