Phrase guide

key off

verb · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

verb

Meaning 1

To take something as a controlling input datum.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

Examples

  • This logic keys off the user's social security number.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

verb

Meaning 2

To turn off something (e.g. a car) using a key.

Definition source: English Wiktionary via Wiktextract

Examples

  • She keyed off the ignition and went into the house.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.