Definitions
01without flaws
A1 · Beginner
adj. having no mistakes, faults, or problems.
adj. entirely without any flaws, defects, or errors; meeting the highest possible standard of excellence.
“The weather was perfect for a picnic in the park.”
“After months of rigorous practice, the gymnast delivered a perfect routine that earned her a standing ovation from the judges.”
Pitfall
This is the most perfect day.
This is a perfect day.
In strict grammar, 'perfect' is non-gradable; something is either perfect or it is not, so avoid using 'more' or 'most'.
02exact or complete
A2 · Elementary
adj. exactly right for a particular purpose or situation.
adj. fitting a particular requirement or definition precisely; complete in all respects.
“You are the perfect person for this job because of your experience.”
“The small coastal village provided a perfect setting for the author's latest mystery novel, offering both isolation and atmosphere.”
Antonyms
03to improve something
B2 · Upper Intermediate
v. to work on something until it has no mistakes.
v. to bring something to a state of completion or excellence through continuous refinement.
“She spent years trying to perfect her recipe for chocolate cake.”
“The research team spent the better part of a decade attempting to perfect the carbon-capture technology before it was ready for commercial use.”
Usage
The verb is transitive and requires a direct object.
04grammar tense
B1 · Intermediate Countable noun Grammar Technical
n. a verb form used to talk about completed actions, like 'I have eaten'.
n. a tense or aspect that expresses an action as having been completed at the time of speaking.
“In English, we use the present perfect to talk about our life experiences.”
“Students often struggle with the distinction between the past simple and the present perfect when describing specific historical events.”
05botany
C2 · Proficiency Science Technical
adj. a flower that has both male and female parts.
adj. describing a flower that possesses both functional stamens and carpels.
“A lily is a perfect flower because it has both male and female reproductive organs.”
“The botanist noted that while many garden species bear perfect flowers, others rely on separate male and female blooms to ensure cross-pollination.”
Synonyms
Antonyms
06music intervals
C1 · Advanced Music Technical
adj. describing certain musical sounds that are very stable, like an octave.
adj. referring to intervals of a unison, fourth, fifth, or octave that are not augmented or diminished.
“The song begins with a perfect fifth, which sounds very clear and strong.”
“The composer utilised perfect fourths and fifths to evoke a medieval atmosphere throughout the orchestral suite's opening movement.”
Real-World Examples
“Novak Djokovic marked his return to the China Open after 11 years with a 6-3 7-6(2) win over Nuno Borges on Wednesday, extending his perfect record at the tournament to 30 wins without a loss.” “Barcelona maintained their perfect start to the LaLiga season with a 3-1 victory at Sevilla on Saturday as captain Raphinha scored a hat-trick to continue his prolific opening to the campaign.” “The perfect football pitch at the 2026 World Cup is not simply grass.” “They find it difficult to delegate, even if that means neglecting their health, relationships and wellbeing in pursuit of a ‘perfect’ outcome.” Etymology
From Middle English perfit, itself from Old French parfit (modern French parfait), from Latin perfectus, the perfect passive participle of perficere — literally "to finish through," from per- ("through, thorough") + facere ("to do, to make"). The spelling was adjusted in the 15th century to bring it into line with its Latin source, a cosmetic restoration that left the pronunciation largely untouched.
The word survives in English as a doublet of parfait, perfecto, and perfectus, each having taken a separate path. It displaced the native Old English fulfremed, which had served the same purpose before the French-Latin compound arrived.
From the adjective perfect, Middle English via Old French parfit and ultimately Latin perfectus, the past participle of perficere — to complete, to carry through.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
ADJECTIVE
ADVERB
Idioms
Domains
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A1 MoversIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.2.0–3.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 1.0–1.50–23TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.120–224
- Frequency
- Very common
- Level
- A1 · BeginnerOxford
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「カタカナ語」 data: JMdict (EDRDG), CC BY-SA 4.0