(of a person) knowing little or nothing; resulting from lack of knowledge

unaware, unknowing

unable to read or write

unable to read well; lacking education

sincere; frank; not affected

honest, unsophisticated

(especially) not having, made without, adequate information

unaware

not prepared or ready

not ready

(of work) not needing special skill; (of a worker) not having special skill or special training

untrained

not sophisticated

natural, simple

uneducated (the usual word)

uncultivated, vulgar

done, said etc with good intentions

harmless, naive

foolishly trusting

harmless, naive