Not artificial; simple, natural.

Free from artifice; natural, simple.

Unartificial; plain.

Not resulting from art or artifice; not produced by constructive skill; natural. Now rare.

Not artificial or contrived; artless.

Not adopted or assumed. Of conduct, bearing, etc.: free from affectation or artificiality.

With for: Not strained after.

Not affected or artificial in style or character.

Not affected or made artificial by education; natural, spontaneous.

figurative. Developed without culture or training, like a wild plant; natural, native.