Definition of "Proper" :
adjective: appropriate for a condition or purpose or occasion or a person's character, needs
"Everything in its proper place."
adjective: limited to the thing specified
"The city proper."
adjective: marked by suitability or rightness or appropriateness
"Proper medical treatment."
adjective: having all the qualities typical of the thing specified
"Wanted a proper dinner, not just a snack."