watchful
/ˈwɒtʃfʊl/adjective
1- watching or observing someone or something closely; alert and vigilant警惕的, 注意的, 警戒的：
they attended dances under the watchful eye of their father.
他们是在他们父亲的监视下参加舞会的。
1.1
- archaic wakeful; sleepless〈古〉醒着的; 不眠的。
派生词