noncompulsory

discretional discretionary elective nonobligatory not required volitional voluntary

accidental chance excess needless nonessential prodigal surplus undesirable unessential wanton

additional avoidable beside the point casual causeless dispensable exorbitant expendable extraneous extrinsic fortuitous futile gratuitous haphazard irrelevant lavish optional profuse random redundant supererogatory superfluous uncalled-for uncritical unneeded unrequired useless worthless

careful designed essential necessary needed planned

alternative arbitrary discretional discretionary elective extra facultative free no strings attached nonobligatory not required open unforced unrestricted up to the individual volitional voluntary

compulsory forced required

avoidable futile gratuitous irrelevant needless redundant superfluous unneeded useless worthless

accidental additional beside the point casual causeless chance dispensable excess exorbitant expendable extraneous extrinsic fortuitous haphazard inessential lavish nonessential optional prodigal profuse random supererogatory surplus uncalled-for uncritical undesirable unessential unrequired wanton

necessary needed valuable worthwhile

indispensable required

extraneous nonessential redundant superfluous undesirable useless

accidental additional avoidable beside the point casual causeless chance dispensable excess exorbitant expendable extrinsic fortuitous futile gratuitous haphazard inessential irrelevant lavish needless optional prodigal profuse random supererogatory surplus uncalled-for uncritical unessential unrequired wanton worthless

essential important necessary needed

accidental additional avoidable beside the point casual causeless chance dispensable excess exorbitant expendable extraneous extrinsic fortuitous futile gratuitous haphazard inessential irrelevant lavish needless nonessential optional prodigal profuse random redundant supererogatory superfluous surplus uncalled-for uncritical undesirable unessential unneeded useless wanton worthless