| Date: | 1200-1300 |
| Language: | Old French |
| Origin: | propre, from Latin proprius 'own' |
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prop‧er1 S1 W2

1 [only before noun] right, suitable, or correct :
2 socially or legally correct and acceptable [≠ improper]
it is proper (for somebody) to do something
I don't feel that it would be proper for me to give you that information.
I don't feel that it would be proper for me to give you that information.3 [only before noun] British English spoken real, or of a good and generally accepted standard [= decent, real American English]
4 [only after noun] the real or main part of something, not other parts before, after or near to it :
The friendly chat which comes before the interview proper is intended to relax the candidate.
the city centre proper
The friendly chat which comes before the interview proper is intended to relax the candidate.
the city centre proper5
proper to something
formala) belonging to one particular type of thing :
the reasoning abilities proper to our species
the reasoning abilities proper to our speciesb) suitable for something :
dressed in a way that was proper to the occasion
dressed in a way that was proper to the occasion6 [only before noun] British English spoken complete [= real]:
He's made a proper fool of himself this time!
He's made a proper fool of himself this time!7 very polite, and careful to do what is socially correct :
She was very formal and proper.
She was very formal and proper.