useful

形容词比较级：more useful

形容词最高级：most useful

词形变化：

副词: usefully | 名词: usefulness |

同义词：

beneficial | helpful | practical | handy | valuable | serviceable | functional | advantageous | effective | constructive | expedient | profitable | good | advisable | favorable | positive | nifty | convenient | suitable | worthwhile | efficacious | utilitarian | utile |

反义词：

useless |

词义辨析：

同义:

a.有用的; 有益的

helpful

handy

serviceable

valuable

beneficial

profitable

advantageous

practical

functional

同义参见:

advisable

good

constructive

favorable

expedient

effective

反义:

a.有用的; 有益的

useless

ineffectual

helpless

futile

vain