単たん純じゅん素そ朴ぼくConjugationsMeaningsNounNa-adjective1. plain and simple; naiveKanji used単single純pure素elementary朴crudeComposed of単たん純じゅんsimple; plain; uncomplicated; straightforward; simple-minded; naiveNa-adjective素そ朴ぼくsimple; artless; naive; unsophisticatedNa-adjective