assumption
/əˈsʌm(p).ʃ(ə)n/noun
assumption is spelled A-S-S-U-M-P-T-I-O-N: 10 letters and 3 syllables. It appears 12 times per million words in written English, the 6,347th most frequent word form (wordfreq, 2021 data). People search “assumption vs presumption” about 1,000 times a month (Google, United States). As a noun, assumption means “The act of assuming, or taking to or upon oneself; the act of taking up or adopting” (English Wiktionary, September 2026). The plural of assumption is assumptions.
How many letters and syllables are in assumption?
| Letters | 10: A-S-S-U-M-P-T-I-O-N |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 12 times per million words; the 6,347th most frequent word form |
| Wrong spellings searched | none measured in search |
| Pairs people search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026).
How common is assumption?
Assumption appears 12 times per million words in written English, the 6,347th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce assumption?
- /əˈsʌm(p).ʃ(ə)n/
Assumption has 3 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-assumption.ogg, Wikimedia Commons (author and licence on each file's page).
Words people confuse with assumption
Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).
Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).
Forms of assumption
- assumptions plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does assumption mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The act of assuming, or taking to or upon oneself; the act of taking up or adopting.
His assumption of secretarial duties was timely.
- 2
The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim.
Their assumption of his guilt disqualified them from jury duty.
- 3
The thing supposed; a postulate, or proposition assumed; a supposition.
- 4
The minor or second proposition in a categorical syllogism.
- 5
The taking of a person up into heaven.
- 6
A festival in honor of the ascent of the Virgin Mary into heaven, celebrated on 15 August.
- 7
Assumptio.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Assumption in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | assomption , supposition , hypothèse , proposition, prémisse |
| German | Übernahme, Annahme, Anmaßung , Vermutung, Unterstellung |
| Spanish | asunción |
| Portuguese | suposição, pressuposição , pressuposto , assunção |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.