untoward (adj.)
- adverse
- annoying
- antagonistic
- apocalyptic
- awkward
- bad
- baleful
- baneful
- black
- bleak
- boding
- boorish
- conflicting
- contrary
- counter
- counteractive
- criminal
- dark
- detrimental
- difficult
- dire
- discouraging
- dreary
- evil
- fateful
- foolish
- foreboding
- fractious
- gloomy
- hapless
- hard
- harmful
- hostile
- ill
- ill-conceived
- ill-considered
- ill-fated
- ill-omened
- ill-starred
- ill-timed
- impolite
- improper
- imprudent
- inaccurate
- inappropriate
- inauspicious
- inconvenient
- indecent
- indecorous
- indelicate
- indocile
- inexpedient
- infelicitous
- inferior
- inimical
- inopportune
- intractable
- intrusive
- invalid
- irrelevant
- irritating
- late
- lowering
- luckless
- malapropos
- malevolent
- malodorous
- menacing
- miserable
- ominous
- opposed
- opposing
- opposite
- peccant
- portentous
- premature
- recalcitrant
- rigorous
- rough
- rude
- silly
- sinful
- sinister
- somber
- stressful
- stupid
- tactless
- threatening
- troublesome
- troublous
- trying
- unbecoming
- unbefitting
- uncalled-for
- undiplomatic
- undisciplined
- unfavorable
- unfit
- unfitting
- unfortunate
- ungentlemanly
- ungodly
- ungovernable
- unhappy
- unhealthy
- unkind
- unladylike
- unlucky
- unmanageable
- unpleasant
- unpromising
- unpropitious
- unready
- unrefined
- unripe
- unseasonable
- unseemly
- unskillful
- unsuitable
- untactful
- untimely
- unwarranted
- unwise
- vexatious
- vexing
- vicious
- wicked
- wild
- wretched
- wrong