vigilant
🇺🇸
/ˈvɪdʒɪlənt/
🇬🇧
/ˈvɪdʒɪlənt/
adjective
R
Being watchful and quick to detect danger or trouble
The security guard remained vigilant throughout the night to ensure the safety of the building's occupants.
警備員は夜通し警めを保ち、建物の住人の安全を確保しました。
translation
警戒深い