adjective
Fitting its definition precisely.
Having all of its parts in harmony with a common purpose.
Without fault or mistake; without flaw, of supreme quality.
Excellent and delightful in all respects.
Morally or spiritually immaculate or ideal.
(grammar, of a tense or verb form) Representing a completed action.
(biology) Sexually mature and fully differentiated.
(botany, of flowers) Having both male parts (stamens) and female parts (carpels).
(mathematics, of a number) Equal to the sum of its proper divisors.
(mathematical analysis, of a set) Equal to its set of limit points, i.e. set A is perfect if A=A'.
(music) 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.
(obsolete) Well informed; certain; sure.
(obsolete) Innocent, guiltless; without blemish.
(obsolete) Sane, of sound mind.
noun
(grammar) The perfect tense, or a form in that tense.
(video games) A perfect score; the achievement of finishing a stage or task with no mistakes.
(historical, Christianity) A leader of the Cathar movement.
verb
(transitive) To make perfect; to improve or hone.
(law) To take an action, usually the filing of a document in the correct venue, that secures a legal right.