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proper

1 proper /ˈprɑːpɚ/ adjective
1 proper
/ˈprɑːpɚ/
adjective
Britannica Dictionary definition of PROPER
[more proper; most proper]
: correct according to social or moral rules
: behaving in a way that is correct according to social or moral rules
always used before a noun : exactly correct
always used before a noun : right or suitable for some purpose or situation
always used after a noun used to emphasize that you are referring to the specific thing that is being named
always used before a noun, chiefly British : complete or absolute

proper to

formal
: belonging to or suited to (something)
2 proper /ˈprɑːpɚ/ adverb
2 proper
/ˈprɑːpɚ/
adverb
Britannica Dictionary definition of PROPER
chiefly British, informal
: in a complete way