feeble
/ˈfiːbl/adjective
1feebler, feeblest
lacking physical strength, especially as a result of age or illness（尤指因年老或疾病而）虚弱的, 衰弱的, 乏力的：my legs are very feeble after the flu.
患了流感之后, 我的两条腿软弱无力。
1.1
- (of a sound) faint（声音）无力的, 微弱的, 不清楚的：
his voice sounded feeble and far away.
他的声音听起来很微弱而且很远。
1.2
- lacking strength of character（性格）弱的, 软弱的：
she overreacted in such a feeble, juvenile way.
她的过激反应是那么的无力和幼稚。
1.3
- failing to convince or impress不能给人留下印象的, 不具说服力的：
a feeble excuse.
难以服人的借口。
派生词
feebleness
nounfeebly
adverb词源
Middle English: from Old French fieble, earlier fleible, from Latin flebilis 'lamentable', from flere 'weep'.