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hypothesis

Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.

Letters

10 characters

Language

English

word origin

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Detailed reference entry for the English word "hypothesis", 10-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "hypothesis" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "hypothesis" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

hypothesis is aEnglishnoun. It means: A tentative conjecture explaining an observation, phenomenon or scientific problem and that can be tested by further observation, investigation, or experimentation. Pronounced /haɪˈpɒθɪsɪs/. It ranks #8,678 in English word frequency. Often confused with hypotheses.

Key facts for hypothesis
PropertyValue
Headwordhypothesis
LanguageEnglish
Part of speechNoun
IPA/haɪˈpɒθɪsɪs/
Letters10
Frequency rank#8,678
Misspellings tracked16
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency rank visualization

Position of hypothesis in English word frequency (lower rank = more common)

Source: Wordfreq corpus

Spelling & Dictionary Insight

The English entry for hypothesis is 10 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /haɪˈpɒθɪsɪs/. Corpus data places it at rank #8,678 in overall English word frequency, indicating it appears regularly in written and spoken text.Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our Hunspell-derived misspelling index lists 16 documented wrong-spelling variants for hypothesis, with forms such as "hhypothesis", "hpyothesis", and "hyopthesis". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It also participates in 1 confusable-pair relationship, "hypotheses", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: Recorded since 1596, from Middle French hypothese, from Late Latin hypothesis, from Ancient Greek ὑπόθεσις (hupóthesis, “base, basis of an argument, supposition”, literally “a placing under”), itself from ὑποτίθημι (hupotíthēmi, “I set before, suggest”), fr… Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is hypothesis, spelled H-Y-P-O-T-H-E-S-I-S, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    A tentative conjecture explaining an observation, phenomenon or scientific problem and that can be tested by further observation, investigation, or experimentation.
  2. 2
    An assumption taken to be true for the purpose of argument or investigation.
  3. 3
    The antecedent of a conditional statement.

Etymology

Recorded since 1596, from Middle French hypothese, from Late Latin hypothesis, from Ancient Greek ὑπόθεσις (hupóthesis, “base, basis of an argument, supposition”, literally “a placing under”), itself from ὑποτίθημι (hupotíthēmi, “I set before, suggest”), from ὑπό (hupó, “below”) + τίθημι (títhēmi, “I put, place”). Compare hypothec.

This word in other languages

Common misspellings

Also misspelled as: hhypothesis,hpyothesis,hyopthesis,hypohtesis,hypotehsis,hypotheiss,hypothesiss,hypothessi,hypothessis,hypothhesis,hypothseis,hypotthesis,hyppothesis,hyptohesis,hyypothesis,yhpothesis

Misspelling Pattern Breakdown

Relative frequency of common misspelling types for hypothesis

Misspelling Variants of "hypothesis"

hhypothesis11hpyothesis10hyopthesis10hypohtesis10hypotehsis10hypotheiss10hypothesiss11hypothessi10
Misspelling Variants of "hypothesis"

Frequency rank: #8,678 in English

Frequently Asked Questions

How do you spell "hypothesis"?
"hypothesis" is spelled H-Y-P-O-T-H-E-S-I-S. The IPA pronunciation is /haɪˈpɒθɪsɪs/.
What does "hypothesis" mean?
As a noun, "hypothesis" means: A tentative conjecture explaining an observation, phenomenon or scientific problem and that can be tested by further observation, investigation, or experimentation.
What words are commonly confused with "hypothesis"?
"hypothesis" is commonly confused with "hypotheses". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "hypothesis"?
The IPA (International Phonetic Alphabet) transcription for "hypothesis" is /haɪˈpɒθɪsɪs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "hypothesis"?
Recorded since 1596, from Middle French hypothese, from Late Latin hypothesis, from Ancient Greek ὑπόθεσις (hupóthesis, “base, basis of an argument, supposition”, literally “a placing under”), itself from ὑποτίθημι (hupotíthēmi, “I set before, sug... See the full etymology section above for more details.
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Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Nearby English words

Other entries that begin with the letter H in our English index:

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Data Source: Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Frequency data from Wordfreq. Misspellings derived from Hunspell dictionaries.