assumption
something taken as true without proof
In more detail
1. (noun) something you believe is true without having proof
2. (noun) the act of taking on a responsibility or position
3. (noun) the assumption that something will happen; an expectation
Examples
- 1. He made the assumption that all students had read the book.
- 2. Her assumption of leadership came after the previous manager left.
- 3. These calculations are based on the assumption that prices will remain stable.
How to use assumption
Assumption refers to something accepted as true without evidence, or the act of taking on responsibility. In intellectual contexts, it emphasizes a claim taken for granted in reasoning; in social contexts, it often implies a possibly unjustified belief. The word carries a mild suggestion of uncertainty or risk, distinguishing it from established facts.
Common phrases
- make an assumption
- based on the assumption that
- safe assumption
- wrong assumption
- assumption of power
Synonyms
supposition · presumption · belief · hypothesis · premise
Opposites
certainty · proof · fact
Word family
assume (verb) · assumed (adjective) · assumedly (adverb)
A common mistake
Learners sometimes confuse 'assumption' with 'resume' or overuse it when a more specific term like 'hypothesis' or 'premise' would be clearer.
Save this word in WordVale and it comes back for review right before you'd forget it — with pronunciation, real examples, and optional translations. One purchase, no subscription.
Get WordValeFREE 7-DAY TRIAL · iPHONE & iPAD