adj · adv · 8 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/ˌɑː pɹiˈɔːɹi/
Received-Pronunciation:/ˌeɪ pɹaɪˈɔːɹaɪ/
General-American:/ˌɑ pɹiˈoɹi/
General-American:/ˌæ pɹiˈoɹi/
General-American:/ˌeɪ pɹiˈoɹi/
General-American:/ˌeɪ pɹaɪˈoɹaɪ/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -ɔːɹi
rhymes with -ɔːɹaɪ
1
adj
Meaning 1
Self-evident, intuitively obvious.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Presumed without analysis.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
Based on hypothesis and theory rather than experiment or empirical evidence.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: deductively[Appendix:Glossary
Antonyms: a posteriori, inductively
6
adjective
Meaning 6
involving deductive reasoning from a general principle to a necessary effect; not supported by fact
Definition source: Princeton WordNet 3.0
Examples
an a priori judgment
Meaning relationships
Synonyms: none provided
Antonyms: a posteriori
7
adjective satellite
Meaning 7
based on hypothesis or theory rather than experiment
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
adverb
Meaning 8
derived by logic, without observed facts
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: a posteriori
History
Etymology
First attested in 1610. Learned borrowing from Medieval Latin ā priōrī (“involving reasoning from cause to effect; from first principles”, literally “from the former”).
Across languages
Translations
70 source translations are retained for this English entry.
Arabic:
مُسَلَّم بِه
(musallam bih)
— logic: based on hypothesis rather than experiment
Arabic:
لَا يُحْتَاجُ إِثْبَاتَة إِلَى تَجْرِبَة
— logic: based on hypothesis rather than experiment
Belarusian:
апрыёрны
(apryjórny)
— logic: based on hypothesis rather than experiment
Chinese Mandarin:
先驗 /先验
(xiānyàn)
— logic: based on hypothesis rather than experiment
Danish:
a priori
— logic: based on hypothesis rather than experiment
Finnish:
apriorinen
— logic: based on hypothesis rather than experiment
Finnish:
hypoteettinen
— logic: based on hypothesis rather than experiment
Greek:
επαγωγικός
(epagogikós)
— logic: based on hypothesis rather than experiment
Greek:
συμπερασματικός
(symperasmatikós)
— logic: based on hypothesis rather than experiment
Hindi:
प्रागनुभविक
(prāgnubhvik)
— logic: based on hypothesis rather than experiment
Hindi:
अनुभवनिरपेक्ष
(anubhvanirpekṣ)
— logic: based on hypothesis rather than experiment
Italian:
a priori
— logic: based on hypothesis rather than experiment
Italian:
teorico
— logic: based on hypothesis rather than experiment
Italian:
preconcetto
— logic: based on hypothesis rather than experiment
Korean:
선험적인
(seonheomjeogin)
— logic: based on hypothesis rather than experiment
Norwegian Bokmål:
a priori
— logic: based on hypothesis rather than experiment
Polish:
a priori
— logic: based on hypothesis rather than experiment
Polish:
aprioryczny
— logic: based on hypothesis rather than experiment
Polish:
apriorystyczny
— logic: based on hypothesis rather than experiment
Portuguese:
a priori
— logic: based on hypothesis rather than experiment
Russian:
априо́рный
(apriórnyj)
— logic: based on hypothesis rather than experiment
Russian:
доо́пытный
(doópytnyj)
— logic: based on hypothesis rather than experiment
Russian:
предположи́тельный
(predpoložítelʹnyj)
— logic: based on hypothesis rather than experiment
Spanish:
a priori
— logic: based on hypothesis rather than experiment
Tagalog:
matwiranin
— logic: based on hypothesis rather than experiment
Turkish:
apriori
— logic: based on hypothesis rather than experiment
Turkish:
önsel
— logic: based on hypothesis rather than experiment
Ukrainian:
апріо́рний
(apriórnyj)
— logic: based on hypothesis rather than experiment
Vietnamese:
tiên nghiệm
— logic: based on hypothesis rather than experiment