Meanings
prepositional phrase
- Very attentive, or vigilant
Wild animals have to be constantly on the alert for predators.
Synonyms: on one's guard, on one's toes
Synonyms & antonyms
prepositional phraseVery attentive, or vigilant
Similar
Also see
Translations
Bulgarian нащрек
- нащрек (naštrek)very attentive, or vigilant
French sur le qui-vive
- sur le qui-vivevery attentive, or vigilant
Spanish sobre aviso
- sobre avisovery attentive, or vigilant
Swedish på alerten
- på alertenvery attentive, or vigilant
Cite this entry
APA
on the alert. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/on%20the%20alert
MLA
“on the alert.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/on%20the%20alert. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “on the alert,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/on%20the%20alert.
Source: on the alert on Wiktionary, CC BY-SA 4.0.