天然的,天真的,不熟練的
Inartificial \In*ar`ti*fi"cial\, a. [Pref. in- not + artificial: cf. F. inartificiel.] Not artificial; not made or elaborated by art; natural; simple; artless; as, an inartificial argument; an inartificial character. -- {In*ar`ti*fi"cial*ly}, adv. -- {In*ar`ti*fi"cial*ness}, n.