diligent
词形变化：
同义词：
industrious | energetic | assiduous | painstaking | hard-working | sedulous | dutiful | studious | muscular | meticulous | conscientious | thorough | attentive | careful | persistent | busy | persevering |
反义词：
词义辨析：
同义:
a.勤勉的; 用功的
industrious
assiduous
sedulous
energetic
hard-working
同义参见:
studious
painstaking
dutiful
muscular
反义:
a.勤勉的; 费尽心血的
idle
lazy
反义参见:
indolent