Take the plunge

Meaning

Commit to a difficult choice.

Usage

Encouragement when deciding to commit.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Refers to diving or jumping into water without hesitation.

Popularized in mid-20th century self-help writing.