(a.) Not instrument (to); not appropriate; unbecoming; unsuitable; not specially fitted; -- followed by to or for.

aberrant abnormal abominable adrift atrocious bad beside the mark beside the point beside the question chintzy criminal delinquent deviant discordant disgraceful evil excessive extraneous extrinsic futile hardly the thing ignominious ill-adapted ill-advised ill-assorted ill-chosen ill-considered ill-fitted ill-matched ill-seasoned ill-sorted ill-suited ill-timed illegal immaterial impertinent impolitic improper in bad taste inadmissible inadvisable inapplicable inapposite inapt inauspicious incidental incompatible incongruous inconsequent inconsonant inconvenient incorrect indecent indecorous indelicate indiscreet inelegant inept inexpedient infamous infelicitous inharmonious inopportune intempestive intrusive irrelative irrelevant late mal a propos maladjusted malapropos misjoined mismatched mismated misplaced mistimed nihil ad rem nonessential not at issue not done not the thing off base off the subject off-base off-color offensive out of character out of joint out of keeping out of line out of phase out of place out of proportion out of season out of time out of tune out-of-line out-of-the-way parenthetical premature sacrilegious scandalous shameful shameless sinful tasteless terrible too late too soon unadapted unapt unbecoming unbefitting unbeseeming uncongenial undesirable undignified undue unessential unfavorable unfit unfitted unfitting unfortunate ungenteel unhandy unhappy unharmonious unlawful unlucky unmeet unprofitable unpropitious unqualified unready unrighteous unripe unseasonable unseemly unstable unsuitable unsuited untasteful untimely untoward unwise vulgar wicked wrong wrongful