craven
Word family adverbcravenlyadjectivecravennouncravenness
cra·ven /ˈkreɪvən/ adjectiveadj BRAVE formal completely lacking courage 懦弱的,胆小的 SYN cowardly He had a craven fear of flying. 他非常害怕乘飞机。
—cravenly adverbadv
Origin craven (1100-1200) Perhaps from Old French crevant, present participle of crever “to burst, break”