どだい 土台 Common word JLPT N1 LinksSentence search for 土台Sentence search for どだいKanji details for 土 and 台Edit in JMdict Noun1. foundation; base; basisAdverb (fukushi)2. from the beginning; from the outset; by natureSee also 元々, often in negative contexts Discussions Log in to talk about this word.