KEY: Voluntary.SYN: Deliberate, {[spaaimneous]?}, free, intentional, optional,discretional, unconstrained, willing.ANT: compulsory, coercive, necessitated, involuntary.
英语同义词词典收录了7932条英语词条,基本涵盖了全部常用同义词或反义词的辨析及翻译,是英语学习的有利工具。