proper.

Suitable. Suited or acceptable to the purpose or circumstances; fit, suitable.

the proper time to plant potatoes

Suitable. Following the established standards of behavior or manners; correct or decorous.

a very proper young lady

Suitable. Such that the preimage of every compact set is compact.

Suitable. Continuous, mapping closed sets to closed sets, and such that the preimage of every point is compact.

Suitable. Separated, of finite type, and universally closed.

Suitable. Such that unique morphism from the variety to k is proper (as above).

Suitable. Such that every closed ball is compact.

Possessed, related. Used to designate a particular person, place, or thing. Proper nouns are usually written with an initial capital letter.

Possessed, related. Pertaining exclusively to a specific thing or person; particular.

Possessed, related. In the strict sense; within the strict definition or core (of a specified place, taxonomic order, idea, etc).

Possessed, related. Belonging to oneself or itself; own.

proper motion — proper left — proper right

Possessed, related. Portrayed in natural or usual coloration, as opposed to conventional tinctures.

Possessed, related. Being strictly part of some other thing (not necessarily explicitly mentioned, but of definitional importance), and not being the thing itself.

proper subset — proper ideal

Possessed, related. Eigen-; designating a function or value which is an eigenfunction or eigenvalue.

Accurate, strictly applied. Excellent, of high quality; such as the specific person or thing should ideally be. (Now often merged with later senses.)

Now that was a proper breakfast.

Accurate, strictly applied. Attractive, elegant.

Accurate, strictly applied. In the very strictest sense of the word.

Accurate, strictly applied. Including only the core areas while excluding surrounding suburbs.

Accurate, strictly applied. Utter, complete.

When I realized I was wearing my shirt inside out, I felt a proper fool.

Accurate, strictly applied. Not being a set.

properly; thoroughly; completely.

properly.

Something set apart for a special use.

A part of the Christian liturgy that varies according to the date.