weightlessWiktionary 原文中文来自 ECDICTadj.无重量的，失重的，不重要的构词拆分weight词根/词干+-less后缀Lacking (something); without (something). Added usually to a noun to form an adjective signifying a lack of that noun.词源说明From weight + -less.释义（英文）形容词 AdjectiveWithout weight.Not affected by gravity.词族派生词（2）weightlesslyweightlessness