out of keeping (?.)
- ill-adapted
- ill-assorted
- ill-chosen
- ill-fitted
- ill-matched
- ill-sorted
- ill-suited
- ill-timed
- improper
- inadmissible
- inapplicable
- inapposite
- inappropriate
- inapt
- inept
- infelicitous
- irrelevant
- mal a propos
- maladjusted
- malapropos
- misjoined
- mismatched
- mismated
- misplaced
- out of character
- out of joint
- out of line
- out of order
- out of place
- out of proportion
- out of season
- out of step
- out of time
- out of tune
- out of turn
- unadapted
- unapt
- unbecoming
- unbefitting
- unfit
- unfitted
- unfitting
- unqualified
- unseasonable
- unseemly
- unsuitable
- unsuited
- untimely
