plural of perfect passive participle

Of, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.

In Latin, the three perfect tenses: perfect, future perfect, and pluperfect or past perfect, as contrasted with the present system: present, future, and imperfect. A verb in the perfect system indicates an action that has completed.

(business) A measurement of performance, often financial performance, either against peers or against a predetermined target.

Relating to perception.

A trained musician who plays percussion instruments, as opposed to a drummer who lacks formal training.

Having the ability to perceive, especially to perceive quickly. / (psychology, education, dated) Perceiving events only in the moment, without reflection, as a very young child.

(philosophy, psychology) One who perceives something. / (parapsychology) One who has perceived a paranormal event.

(rare) A survey, a tour; a walking around. / (law) An English legal ceremony in which an official from a town or parish walks around it to delineate and record its boundaries.

(rare, cognitive science) Perception, especially visual perception, that does not immediately follow from what is actually sensed, such as perception of an entire object only a part of which is seen at a time.