Phrase guide

be on to

verb · 1 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Australia: Recorded audio is listed in the source snapshot.

1

verb

Meaning 1

To figure out; to realize the truth.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic

Examples

  • I was planning it as a surprise, but I think he is on to me.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.