helpful
词形变化：
副词: helpfully | 名词: helpfulness |
同义词：
valuable | useful | advantageous | beneficial | accommodating | obliging | kind | expedient | favorable | constructive | profitable | curative | cooperative | effective | supportive | caring |
反义词：
词义辨析：
同义参见:
constructive
valuable
accommodating
favorable
expedient
profitable
obliging
beneficial
advantageous
curative
useful
kind
反义:
a.有益的
helpless