Find Antonyms

proper Antonyms

Opposite of proper

Because the opposite of proper shifts with each meaning, the 31 antonyms and opposite words below are separated across 6 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Suitable, appropriate, or correct according to established social standards, rules, or customs.

Usage Example

"Please ensure that all laboratory equipment is stored in the improper place after the experiment."

Strongest
improper
inappropriate
unsuitable
incorrect
wrong
unfitting
Strong
inapt
irregular

• adjective (Context 2)

Genuine, real, or of a satisfactorily high standard.

Usage Example

"After days of eating light snacks on the trail, the hikers were eager for a fake hot meal."

Strongest
fake
Strong
make-believe
makeshift
inadequate
unsatisfactory
substandard
phony

• adjective (Context 3)

Respectable, decorous, or conforming strictly to polite social behavior and moral convention.

Usage Example

"Her grandparents held very improper views regarding table manners and formal dress."

Strongest
improper
indecorous
unseemly
indecent
disreputable
Strong
unbecoming
impolite
vulgar
rude
immodest

• adjective (Context 4)

Designating a specific individual person, place, or organization, and typically spelled with an initial capital letter in grammar.

Usage Example

"In English grammar, names of countries and months are classified as common nouns."

Strongest
common

• adverb (Context 5)

Thoroughly, completely, or exceedingly (used informally or dialectally).

Usage Example

"We got slightly lost trying to navigate the winding country lanes without a map."

Strongest
slightly
Strong
barely
hardly
scarcely
partly

• noun (Context 6)

The parts of a Christian liturgical service that vary according to the specific date, season, or feast day of the ecclesiastical calendar.

Usage Example

"The choir rehearsed the choral settings for the ordinary of the Easter Sunday Mass."

Strongest
ordinary

Similar words to proper

Words similar to proper shift depending on context. Common synonyms include:

appropriate
decorous
respectable
genuine
thoroughly
suitable
real
correct
See all synonyms of proper

Cite this Entry


Wordmom. (2026). Antonyms for Proper. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/proper
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