apt connotes a fitness marked by nicety and discrimination.
apt quotations
happy suggests what is effectively or successfully appropriate.
a happy choice of words
felicitous suggests an aptness that is opportune, telling, or graceful.
a felicitous phrase
Examples of proper in a Sentence
Adjective
It is not proper to speak that way.
The children need to learn proper behavior.
It would not be proper for you to borrow the ladder without asking first.
She is a very prim and proper young lady.
Is this the proper spelling of your name?
You need to eat a proper meal instead of junk food.
Each step must be done in the proper order. Adverb
They beat us good and proper.
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Adjective
Every year, homeowners are injured in falls that could have been prevented with proper ladder setup.—👁 Image Lauren Jarvis-Gibson, Kansas City Star, 31 Mar. 2026 And then there’s been ongoing complaints that Black characters don’t often get proper sendoffs on TV shows.—👁 Image Ronda Racha Penrice, HollywoodReporter, 31 Mar. 2026
Noun
The Common Council Finance and Personnel Committee voted 4-1 to give police supervisors a 1% incentive boost for residing in Milwaukee proper.—👁 Image Drake Bentley, jsonline.com, 20 Mar. 2026 Just over a year ago, the city cleared out the encampment in Humboldt Park proper.—👁 Image Adam Harrington, CBS News, 19 Jan. 2026
Adverb
Stranger Things proper covered the years 1983-1987, with each season taking place in a new year.—👁 Image Jackie Strause, HollywoodReporter, 27 Mar. 2026 In Dallas-Fort Worth proper, expect showers and thunderstorms.—👁 Image Brayden Garcia, Fort Worth Star-Telegram, 4 Mar. 2026 See All Example Sentences for proper
Word History
Etymology
Adjective
Middle English propre "belonging to a person or thing, private, peculiar, specific, appropriate, correct," borrowed from Anglo-French & Latin; Anglo-French, borrowed from Latin proprius "one's own, belonging or peculiar to one person or thing, private, suitable, (of a word) proper to the thing being described," perhaps adjectival derivative from a verb *propriāre "to make one's own," from prō-/prŏpro- entry 2 + *-priāre, derivative from Indo-European *prii̯o- "one's own, dear" — more at free entry 1
Note:
An alternative hypothesis sees proprius as restructured from a phrase *prō prīvō "as a private individual," in which, after univerbation as *prōprīu̯os, the o was absorbed by the preceding u̯, which vocalized, leading to the shortening of ī (a vowel being regularly shortened before another vowel).
Noun
Middle English propre, derivative of propreproper entry 1
