perf

Fitting its definition precisely.

“a perfect circle”

Having all of its parts in harmony with a common purpose.

“That bucket with the hole in the bottom is a poor bucket, but it is perfect for watering plants.”

Without fault or mistake; thoroughly skilled or talented.

“Practice makes perfect.”

Excellent and delightful in all respects.

“a perfect day”

Of a number: equal to the sum of its proper divisors.

“6 is perfect because the sum of its proper divisors, 1, 2, and 3, which is 6, is equal to the number itself.”

(grammar, of a tense or verb form) Representing a completed action.

Sexually mature and fully differentiated.

Of flowers, having both male parts (stamens) and female parts (carpels).

Of a set: equal to its set of limit points, i.e. set A is perfect if A=A'.

Describing an interval or any compound interval of a unison, octave, or fourths and fifths that are not tritones.

(of a cocktail) Made with equal parts of sweet and dry vermouth.

“a perfect Manhattan; a perfect Rob Roy”

Well informed; certain; sure.

Innocent, guiltless.

(grammar) of, or relative to, the perfect tense or perfective aspect.

Tending to make perfect, or to bring to perfection.

To pierce; to penetrate.

To make a line of holes in (a thin material) to allow separation at the line.

“to perforate a sheet of postage stamps”

Pierced with holes.

The act of perforating or the state of being perforated.

Any opening in a solid object.

An abnormal opening in an organ, such as a rupture.

A series of holes punched through something in order to assist in separating parts.

That portion of a surface that remains after an open disk is removed from it.

The act of performing; carrying into execution or action; execution; achievement; accomplishment; representation by action.

“the performance of an undertaking or a duty”

That which is performed or accomplished; a thing done or carried through; an achievement; a deed; an act; a feat; especially, an action of an elaborate or public character.

A live show or concert.

The amount of useful work accomplished estimated in terms of time needed, resources used, etc.

“Better performance means more work accomplished in shorter time and/or using fewer resources.”

The actual use of language in concrete situations by native speakers of a language, as opposed to the system of linguistic knowledge they possess (competence), cf. :w:linguistic performance.