What is another word for improper?

Need synonyms for improper? Here's a list of similar words from our thesaurus that you can use instead.

Adjective
Not in accordance with accepted standards, especially of morality or honesty
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“During the festive season, injuries result from improper use of fireworks.”
Adjective
Lacking in modesty or decency
“He touched himself in public without thought as to how improper it may be to others.”
Adjective
Obscene or offensive in nature
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Adjective
Wrong or unjust
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Adjective
Contrary to the rules or to that which is normal or established
Adjective
(of a falsehood) Concocted to deceive others
Adjective
Lacking in morals or ethics
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Adjective
(idiomatic) Beyond the bounds of civility or morality
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Adjective
Unwarranted or inappropriate because excessive or disproportionate
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Adjective
Showing no shame or embarrassment
Adjective
(archaic) Overfamiliar or forward
Adjective
Not legally valid or binding
Adjective
Lacking piety or respect for the sacred
Adjective
In violation of one or more of the rules and conventions of a language as defined by the grammar, resulting in unacceptable, or incorrect, usage
Adjective
Of, or characterized by, adultery
Adjective
Tending to behave in a perverted or deviant manner
Adjective
(informal, of a person) Having an unreasonable disposition or character
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