useless
词形变化：
副词: uselessly | 名词: uselessness |
同义词：
ineffectual | worthless | futile | fruitless | null | idle | needless | wretched | shelf | bootless | abortive | windy | unusable | impractical | unserviceable | hopeless | inoperable | inept | pathetic | incompetent | inefficient | unsuccessful | unavailing |
反义词：
useful |
词义辨析：
同义:
a.无用的; 白费的
worthless
ineffectual
fruitless
同义参见:
windy
bootless
futile
wretched
shelf
abortive
idle
null
needless
反义:
a.无用的; 白费的
useful
反义参见:
beneficial