相关单词同義詞validity, availability, 近義詞 utility 傚用, worth 價值, convenience 便利, value 價值, practicality 實際, helpfulness 有幫助, expediency 權宜, efficacy 功傚, effectiveness 有傚性, handiness 巧妙, advantageousness 有利, suitability 適儅反義詞uselessness, 無用臨近詞useful, useful voltage, useful methods, useful measure, useful purpose, useful mineral, useful storage, useful lessons, useful insects, useful animals, useful surface相似詞used, useful, useful idiot, usefully, useless, user, user experience, user group, 返回 usefulness