Synonyms for improper
adj not suitable- awkward
- erroneous
- false
- ill-advised
- imprudent
- inaccurate
- inadmissible
- inappropriate
- incorrect
- irregular
- unwarranted
- wrong
- abnormal
- at odds
- bad form
- discordant
- discrepant
- ill-timed
- inadvisable
- inapplicable
- inapposite
- inapt
- incongruous
- inexpedient
- infelicitous
- inharmonious
- inopportune
- ludicrous
- malapropos
- odd
- off-base
- out-of-place
- out-of-season
- preposterous
- unapt
- unbefitting
- uncalled-for
- uncomely
- undue
- unfit
- unfitting
- unseasonable
- unsuitable
- unsuited
- untimely
Antonyms for improper
- OK
- acceptable
- accurate
- appropriate
- correct
- honest
- reasonable
- right
- suitable
- true
- valid
- wise
- decent
- fitting
- formal
- good
- moral
- proper
- uncorrupt
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
amiss
adjective. wrong; defective
broader
adjective. vulgar
broadest
adjective. vulgar
coarse
adjective. not fine, rude
- base
- bawdy
- blue
- boorish
- brutish
- cheap
- common
- crass
- crude
- dirty
- earthy
- filthy
- foul
- foul-mouthed
- gross
- gruff
- immodest
- impolite
- improper
- impure
- incult
- indelicate
- inelegant
- loutish
- low
- lowbred
- lowdown and dirty
- mean
- nasty
- obscene
- off-color
- offensive
- raffish
- raunchy
- raw
- ribald
- rough
- roughneck
- rude
- scatological
- smutty
- tacky
- uncivil
- uncouth
- uncultivated
- uncultured
- unrefined
- vulgar
- vulgarian
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.