げんけいふていし 原形不定詞 LinksSentence search for 原形不定詞Sentence search for げんけいふていしKanji details for 原, 形, 不, 定 and 詞Edit in JMdict Noun1. bare infinitive; root infinitiveGrammar, See also to不定詞 Discussions Log in to talk about this word.