assumption

/əˈsʌm(p).ʃ(ə)n/

//əˈsʌm(p).ʃ(ə)n// noun

By · According to Wiktionary data (CC BY-SA) ·

"assumption" is a 10-letter English headword indexed on PlainSpell.

The verdict

“assumption” is a regularly-used English word, ranked #6,328 in English word frequency and used as a noun.

#6,328
frequency rank, English
10
letters
14
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The act of assuming, or taking to or upon oneself; the act of taking up or adopting.

Key facts for assumption
PropertyValue
Headwordassumption
LanguageEnglish
Part of speechNoun
IPA/əˈsʌm(p).ʃ(ə)n/
Letters10
Frequency rank#6,328
Misspellings tracked14
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “assumption” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). assumption lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for assumption is 10 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /əˈsʌm(p).ʃ(ə)n/. Corpus data places it at rank #6,328 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 7 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 14 likely wrong-spelling variants for assumption, with forms such as "assmuption", "assummption", and "assumpiton". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. We don't track a confusable pairing for this entry, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Middle English assumpcioun, from Medieval Latin assumptio (“a taking up (into heaven)”) and Latin assumptio (“a taking up, adoption, the minor proposition of a syllogism”). Doublet of assumptio; see assume. The correct English form is assumption, spelled A-S-S-U-M-P-T-I-O-N.

Definition

  1. 1
    The act of assuming, or taking to or upon oneself; the act of taking up or adopting.
  2. 2
    The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim.
  3. 3
    The thing supposed; a postulate, or proposition assumed; a supposition.
  4. 4
    The minor or second proposition in a categorical syllogism.
  5. 5
    The taking of a person up into heaven.
  6. 6
    A festival in honor of the ascent of the Virgin Mary into heaven, celebrated on 15 August.
  7. 7
    Assumptio.

Etymology

From Middle English assumpcioun, from Medieval Latin assumptio (“a taking up (into heaven)”) and Latin assumptio (“a taking up, adoption, the minor proposition of a syllogism”). Doublet of assumptio; see assume.

This word in other languages

asunción(Español)assomption(Français)Übernahme(Deutsch)suposição(Português)

Common misspellings

Also misspelled as: assmuption,assummption,assumpiton,assumpption,assumpsion,assumptino,assumptionn,assumptoin,assumpttion,assumtpion,assupmtion,asumption,asusmption,sasumption

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of assumption - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

assmuption2assummption1assumpiton2assumpption1assumpsion1assumptino2assumptionn1assumptoin2
Edit distance from "assumption"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "assumption"?
"assumption" is spelled A-S-S-U-M-P-T-I-O-N. The IPA pronunciation is /əˈsʌm(p).ʃ(ə)n/.
What does "assumption" mean?
As a noun, "assumption" means: The act of assuming, or taking to or upon oneself; the act of taking up or adopting.
What are common misspellings of "assumption"?
Common misspellings include "assmuption", "assummption", "assumpiton", "assumpption", "assumpsion". The correct spelling is "assumption".
How do you pronounce "assumption"?
The IPA (International Phonetic Alphabet) transcription for "assumption" is /əˈsʌm(p).ʃ(ə)n/. 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 "assumption"?
From Middle English assumpcioun, from Medieval Latin assumptio (“a taking up (into heaven)”) and Latin assumptio (“a taking up, adoption, the minor proposition of a syllogism”). Doublet of assumptio; see assume. See the full etymology section above for more details.
Is PlainSpell free to use?
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.

Using “assumption”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is A-S-S-U-M-P-T-I-O-N - every other letter order is a misspelling in standard orthography.
  • Say it as /əˈsʌm(p).ʃ(ə)n/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list