unartful

artless

candid childlike frank green guileless innocent like a babe in the woods naive natural open outspoken plain simple sincere square straightforward trusting unaffected unartificial undisguised unreserved unschooled unsophisticated unstudied up front

deceitful dishonest sly

casual impromptu instinctive offhand simple unplanned voluntary

ad-lib automatic break loose down extemporaneous extempore free free-spirited from the hip impetuous improvised inevitable involuntary irresistible natural off top of head off-the-cuff unavoidable unbidden uncompelled unconscious unconstrained uncontrived uncontrolled unforced unintentional unpremediated unprompted unsophisticated unstudied up front

deliberate planned

intended premeditated

amateurish awkward clumsy gauche inapt inept inexperienced inexpert maladroit menial unskilled

skillful