
English word proper comes from Proto-Indo-European *priHós (Dear, beloved. Happy, free.)
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*priHós (Proto-Indo-European)
Dear, beloved. Happy, free.
*prijos (Proto-Italic)
proprium (Latin)
propre (Old French)
(one's) own. Proper, appropriate, correct. Special.
proper (Anglo-Norman)
proper (English)
(Scotland) properly; thoroughly; completely. (nonstandard, slang) properly (archaic) Belonging to oneself or itself; own. [from 14thc.]. (grammar) Used to designate a particular person, place, or thing. Proper nouns are usually written with an initial capital letter. [from 14thc.]. (heading) Accurate, strictly applied.. (heading) Possessed, related.. (heading) Suitable.. (heraldry) Portrayed [...]