vigilant

/ˈvɪdʒɪlənt/ (bre, ipa) · [vˈɪdʒələnt] /ˈvɪdʒɪlənt/ (ame, ipa)

vigilant — adjective

  • vigilantpositive
  • more vigilantcomparative
  • most vigilantsuperlative

1. watching carefully for signs that trouble, danger, or another problem may appear

1.形容詞C1
釋義

watching carefully for signs that trouble, danger, or another problem may appear, and ready to act quickly if it does

例句

Salma remained vigilant while the children crossed the flooded street after school.

remain vigilant while [risking action]

Airport staff stayed vigilant for unattended bags during the holiday travel rush.

be vigilant for + possible threat

同義詞
  • alert

    more immediate and reactive; vigilant stresses sustained watchfulness over time

  • watchful

    close in meaning, but slightly less formal and often focused on one person or place

  • cautious

    about avoiding risk in your own actions, not necessarily scanning for outside danger

反義詞
  • careless

    failing to give enough attention to possible problems

  • inattentive

    not paying close attention when attention is needed

  • unwary

    not expecting danger and therefore easily caught off guard

文法句型

be vigilant for + noun

be vigilant about + noun

be vigilant against + noun

keep a vigilant eye on + noun

用法筆記

Often follows 'be', 'remain', or 'stay' and commonly takes 'for', 'about', or 'against' to name the risk being watched. It suggests active attention to possible danger, not just general carefulness.

常見錯誤

❌The guards were vigilant of the back gate.
✅The guards were vigilant about the back gate.' / 'The guards were vigilant for anyone using the back gate.
💡'vigilant' normally takes 'about', 'against', or 'for', not 'of'.