What does perfect mean?
“Perfect” describes something considered complete, flawless, or as good as it can be. It commonly describes objects, performances, plans, examples, and conditions, as in “a perfect record” or “perfect timing,” and it can express wholehearted approval in informal conversation. Its praise often implies that there is nothing important left to correct or improve. The word can also mean absolute or unqualified, especially in phrases such as “a perfect example,” and it has specialized uses in grammar and mathematics. As a verb, “perfect” means to bring something to completion or make it flawless through practice, revision, or experience. “Perfectly” is the usual adverb, meaning either without any flaw or, in formal contexts, completely. Historically associated with completion and moral excellence, “perfect” retains both practical and idealistic associations, making it useful for describing work that is not merely adequate but fully realized.
Free from defects or errors; complete and accurate; or so suitable that it cannot be improved.
"The guide gave us a perfect example of how the restoration technique works."
The adjective is also used for specialized grammatical and mathematical concepts.
To bring something to completion, or make it free from faults or defects.
"Years of rehearsal perfected the young violinist’s technique."
Usually transitive and often suggesting improvement through study, practice, or revision.
In a completely flawless or satisfactory manner; informally, very or entirely.
"She could hear every word perfectly."
Although “perfect” can function adverbially, “perfectly” is the standard everyday form.
A person regarded as morally or intellectually perfect.
"The hagiographer presents the hermit as a perfect untouched by worldly vanity."
Rare, chiefly literary, historical, or religious; now uncommon outside older writing.
Rare and chiefly found in literary, historical, or religious contexts.
"The early biographies portrayed them as virtual perfects."
The word began with the idea of something finished, not merely flawless: perfection was originally completion, which is why “perfect” still carries the sense of being fully realized.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does perfect come from?
The word comes from Latin perfectus, a past participle meaning “completed” or “made perfect,” formed from perficere, “to finish” or “accomplish.” It entered Middle English through Anglo-Norman and Old French forms such as parfait. English later developed the dominant sense of being free from fault or deficiency, while related words such as perfection, perfectionist, perfective, and perfectibility preserve the same Latin root.
Related word forms
How perfect is actually used
In everyday English, “perfect” is also an informal expression of enthusiastic approval, as in “That’s perfect!” In formal writing, “perfect” can suggest an absolute or idealized standard, while “perfectly” may qualify a negative without changing its literal meaning: “The signal was perfectly clear.” The noun is rare and chiefly literary, historical, or religious.
Easily confused with perfect
A prefect is a senior pupil who helps supervise a school, whereas a perfect is something flawless or complete.