Propper vs. Proper: What's the Difference?

One who or that which props.

Characterized by appropriateness or suitability; fitting

Called for by rules or conventions; correct

Strictly following rules or conventions, especially in social behavior; seemly

Belonging to one; own

Characteristically belonging to the being or thing in question; peculiar

Being within the strictly limited sense, as of a term designating something

(Ecclesiastical) For use in the liturgy of a particular feast or season of the year.

(Mathematics) Of or relating to a subset of a given set when the set has at least one element not in the subset.

Worthy of the name; true

Out-and-out; thorough

Thoroughly

The portion of the liturgy that varies according to the particular feast or season of the year.

Suitable.

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

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

Possessed, related.

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

Pertaining exclusively to a specific thing or person; particular.

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

Belonging to oneself or itself; own.

(heraldry) Portrayed in natural or usual coloration, as opposed to conventional tinctures.

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

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.)

Attractive, elegant.

In the very strictest sense of the word.

Utter, complete.

Properly; thoroughly; completely.

Properly.

(obsolete) Something set apart for a special use.

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

Belonging to one; one's own; individual.

Belonging to the natural or essential constitution; peculiar; not common; particular; as, every animal has his proper instincts and appetites.

Befitting one's nature, qualities, etc.; suitable in all respect; appropriate; right; fit; decent; as, water is the proper element for fish; a proper dress.

Becoming in appearance; well formed; handsome.

Pertaining to one of a species, but not common to the whole; not appellative; - opposed to common; as, a proper name; Dublin is the proper name of a city.

Rightly so called; strictly considered; as, Greece proper; the garden proper.

Represented in its natural color; - said of any object used as a charge.

Properly; hence, to a great degree; very; as, proper good.

Marked by suitability or rightness or appropriateness;

Limited to the thing specified;

Appropriate for a condition or occasion;

Having all the qualities typical of the thing specified;