Word.ws English Dictionary

on the alert

on the alert prepositional phrase: very attentive, or vigilant.

Prepositional phrase

  1. Very attentive, or vigilant
    • Wild animals have to be constantly on the alert for predators.

Synonyms of on the alert

Questions about on the alert

What does on the alert mean?
On the alert means very attentive, or vigilant.
What part of speech is on the alert?
On the alert is a prepositional phrase.

Words near on the alert in the dictionary

  1. on terms with
  2. on that note
  3. on that score
  4. on the
  5. on the air
  6. on the alert
  7. on the anvil
  8. on the back burner
  9. on the back foot
  10. on the back of
  11. on the ball

Source and license

Adapted from Wiktionary: on the alert (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “on the alert.” Word.ws, https://word.ws/on_the_alert. Based on Wiktionary, CC BY-SA 4.0.