vigilant
01
警戒している, 注意深い
cautious and attentive of one's surrounding, especially to detect and respond to potential dangers or problems
例
The security guard remained vigilant throughout the night, monitoring the premises for any suspicious activity.
警備員は一晩中警戒を怠らず、不審な活動がないか構内を監視しました。
語彙ツリー
unvigilant
vigilantly
vigilant
vigil
