infelicitous (adj.)

• bad
• barbaric
• barbarous
• cacophonous
• careless
• clumsy
• coarse
• crude
• dysphemistic
• erroneous
• faulty
• futile
• graceless
• gross
• harsh
• ill-advised
• ill-chosen
• ill-considered
• ill-sorted
• ill-timed
• impolitic
• imprecise
• improper
• impure
• inadmissible
• inadvisable
• inapplicable
• inapposite
• inappropriate
• inapt
• inauspicious
• incongruous
• inconvenient
• incorrect
• indecorous
• inelegant
• inept
• inexpedient
• inopportune
• intrusive
• irrelevant
• late
• loose
• low
• maladjusted
• malapropos
• mismatched
• mismated
• misplaced
• outlandish
• premature
• rude
• slipshod
• slovenly
• tasteless
• unadapted
• unbecoming
• unbefitting
• uncouth
• undesirable
• undignified
• unfavorable
• unfit
• unfitting
• unfortunate
• ungraceful
• unhappy
• unlucky
• unpolished
• unprofitable
• unpropitious
• unqualified
• unready
• unrefined
• unripe
• unseasonable
• unseemly
• unsuitable
• unsuited
• untimely
• untoward
• unwise
• vulgar
• wrong