proper
adj.adj. correct, right, or suitable for a specific situation. It can also mean following the social rules for good behavior.
adj. conforming to established standards, social conventions, or formal requirements. In British English, it is also used as an intensifier to mean complete or thorough.
Make sure you use the proper tools for this job.
Without the proper permits, the construction crew cannot begin work on the new office building.
The diplomat emphasized that maintaining proper decorum was essential for the success of the international summit, regardless of the underlying political tensions.
From Middle English propre, from Anglo-Norman proper, propre, Old French propre (French: propre), from Latin proprius.
Typically placed before the noun it modifies; when used after a noun (e.g., 'the city proper'), it refers to the central part of a place.
He didn't do it in a proper way.He didn't do it properly.Learners often use the adjective 'proper' where the adverb 'properly' is required to modify a verb.