Thesaurus
Synonyms & Antonyms of improper
not appropriate for a particular occasion or situation
- an improper use of slang in a formal piece of writing
Synonyms for improper
Words Related to improper
Phrases Synonymous with improper
Near Antonyms for improper
- acceptable,
- adequate,
- all right,
- decent,
- fine,
- OK
- (or okay),
- passable,
- respectable,
- satisfactory,
- tolerable
Antonyms for improper
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Great Words for Scrabble
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- Which of the following Q-without-U words means the number five in cards or dice?

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Merriam-Webster unabridged
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Time Traveler for improper
The first known use of improper was in the 15th century
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