しふく 私服 Common word LinksSentence search for 私服Sentence search for しふくKanji details for 私 and 服Edit in JMdict Noun, Noun which may take the genitive case particle 'no'1. ordinary clothes (i.e. non-uniform); plain clothes; civilian clothes; casual wear; muftiSee also 制服Noun2. plainclothes police officerAbbreviation, See also 私服刑事 Discussions Log in to talk about this word.