inadvisable (adj.)
- bad
- careless
- foolhardy
- foolish
- futile
- harebrained
- ill-advised
- ill-considered
- ill-judged
- ill-timed
- impolitic
- improper
- imprudent
- inappropriate
- inapt
- incautious
- incongruous
- inconsiderate
- indiscreet
- inept
- inexpedient
- infelicitous
- injudicious
- inopportune
- insensate
- irrational
- malapropos
- mindless
- misguided
- myopic
- pointless
- rash
- reasonless
- reckless
- senseless
- shortsighted
- thoughtless
- unadvised
- unbefitting
- unconsidered
- undesirable
- undiscerning
- unfit
- unfitting
- unfortunate
- unhappy
- unprofitable
- unreasonable
- unreflective
- unseasonable
- unseeing
- unseemly
- unsound
- unsuitable
- unthinking
- unthoughtful
- untimely
- unwise
- witless
- wrong
