unseldomWiktionary 原文英美/ʌnˈsɛldəm/构词拆解unun-前缀seldomseldom词干un-(added to adjectives or past participles) not · (added to nouns) lack of词源链原始词根原始印欧语Proto-Indo-European约前 4500–前 2500 年*sel-英语Englishunseldom词源说明From un- (prefix meaning ‘not’) + seldom.释义副词adverb1literaryNot seldom; frequently, regularly.