Na-adjective (keiyodoshi), Nounsimple; plain; uncomplicated; straightforward; simple-minded; naive

Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no', Nounsingle; simple; sole; individual; unitary

Na-adjective (keiyodoshi), Nounmonotony; monotone; dullness · monotone; monotonic

Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi)sole; single; solo · independence; singleness; singularity

Adverb (fukushi)simply; merely; only; solely