Word
assumption
Phoneticsas·sump·tion, stress on the second syllable
US/əˈsəmpʃən/
UK/ɐsˈʌmpʃən/
Definitions
01something taken for granted
B2 · Upper Intermediate Countable noun
n. something that you accept as true or certain to happen, even if you do not have any proof.
n. a belief or proposition accepted as true or as certain to happen, without proof or demonstration.
日本語:想定※
“The whole plan was based on the assumption that the weather would stay fine.”
“The economic forecast relies on the flawed assumption that consumer spending will remain stable despite rising interest rates.”
Synonyms
02taking on power or a role
C1 · Advanced Uncountable noun Formal
n. the act of taking a position of power or starting a new responsibility.
n. the act of taking on or adopting a role, responsibility, or position of power.
日本語:就任※
“His assumption of the role of manager surprised everyone in the office.”
“The sudden assumption of emergency powers by the president triggered widespread protests across the capital.”
Usage
Often followed by the preposition 'of'.
Synonyms
Antonyms
03religious event
C2 · Proficiency Uncountable noun Religion Formal
n. the belief in some Christian churches that Mary, the mother of Jesus, was taken into heaven.
n. the doctrine or festival commemorating the bodily taking up of the Virgin Mary into heaven.
“Many countries have a public holiday in August to celebrate the Assumption.”
“The cathedral features a stunning Renaissance painting depicting the Assumption of the Virgin surrounded by angels.”
Collocations
Common phrases and expressions where native English speakers use the word “assumption” in context.
Verb
01. make assumption
“It is dangerous to make assumptions about someone's character before you meet them.”
verb + noun
02. meet assumption
“The data must meet certain assumptions before we can use this statistical test.”
verb + noun
03. question assumption
“Scientists often question assumptions that have been accepted for decades.”
verb + noun
04. support assumption
“We need more evidence to support the assumption that the market will grow next year.”
verb + noun
Adjective
05. additional assumption
“The researcher had to make an additional assumption to simplify the complex calculation.”
adj + noun
06. following assumption
“Our theory is based on the following assumption regarding consumer behavior.”
adj + noun
07. fundamental assumption
“The fundamental assumption of democracy is that all citizens are equal.”
adj + noun
08. implicit assumption
“There was an implicit assumption that the project would be finished by Friday.”
adj + noun
09. important assumption
“One important assumption in this model is that prices will remain stable.”
adj + noun
Noun
10. assumption hold
“If this assumption holds, we can expect a significant increase in sales.”
noun + verb
11. assumption imply
“Your assumption implies that all students have access to the internet at home.”
noun + verb
12. assumption lead
“A false assumption can lead to a completely wrong conclusion.”
noun + verb
Real-World Examples
“Under New York State’s Medicaid-funded homecare system, employers must pay wages for 13 hours of a 24-hour shift, under the assumption that workers use the remaining 11 hours to eat and sleep.” “And this non-appearance presents a more serious challenge to modern scientific assumptions than any UFO sighting.” “Research, including my own, has shown this assumption to be entirely false.” Word family
VERB
NOUN
Related words
Domain
- 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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
- Frequency
- Common
- Level
- B2 · Upper IntermediateOxford
- Updated
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QR code
englishreference.com/q/assumption
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「日本語」 data: JMdict (EDRDG), CC BY-SA 4.0