proper suggests a suitability through essential nature or accordance with custom.

PROPER definition: 1. real, satisfactory, suitable, or correct: 2. showing standards of behaviour that are socially…. Learn more.

1. used to mean 'real' You use proper in front of a noun to emphasize that someone or something really is the thing referred to by the noun. It's important to have a proper breakfast in the …

Something proper is correct or right. There's a proper fork to use for salad, and a proper way to dress for a wedding. Things that are proper fit the situation — they're the right thing to do, …

Definition of proper adjective from the Oxford Advanced Learner's Dictionary. [only before noun] (especially British English) right, appropriate or correct; according to the rules. We should have …

(immediately postpositive) (of an object, quality, etc) referred to or named specifically so as to exclude anything not directly connected with it: his claim is connected with the deed proper

Proper generally refers to something that is correctly done or behaving in a suitable or appropriate manner according to rules, conventions, standards or principles.