tactlessWiktionary 原文中文来自 ECDICTadj.不机智的，不机敏的构词拆分tact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 tact + -less.释义（英文）形容词 Adjectivehaving no tact; unaware or intentionally inconsiderate of someone else's feelings词族派生词（2）tactlesslytactlessness相关词（1）tact