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assumption

assumption

513 3.5
A belief people accept as true without proof
  • noun
  • /əˈsʌmpʃən/
translation icon : suposición
  • The researchers identified several key assumptions that underpinned their theory.
  • make assumptions
  • based on the assumption
  • rest on the assumption

Secondly, it protects you from making assumptions that could be incorrect.

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Examples

  • Be safe out there, question assumptions, and never stop learning.

  • You're making an assumption, and that assumption can lead you astray.

  • There is an assumption that we could.

  • And in that assumption, we gain nothing.

  • That calls for an assumption on the part of the witness.

  • Would I be wrong in that assumption?

  • Oh, it's a fair assumption.

  • So these are important assumptions to know about.

  • Do not make the assumption that inaction has no price.

  • And as we've said, many of our assumptions still hold.

Synonyms

premise
vsassumption
365 5.9

An idea accepted as true that supports an argument

is broader, used for general beliefs not only formal argument
speculation
vsassumption
288 4.8

A guess or idea made without enough proof

is more neutral, used for beliefs accepted as true rather than guesses
presumption
vsassumption
35 5.8

An idea accepted as true without proof used as a basis for thinking or action

is the everyday belief used for reasoning rather than a formal default
supposition
vsassumption
23 7.3

An idea that people accept as true without proof

is the general category of such beliefs used in many contexts
preconception
vsassumption
19 6.8

An opinion you form before you have enough facts that makes you judge unfairly

is the neutral belief used as a basis, not implying bias
preconceived notion
vsassumption
12 5.6

An opinion you form before you have enough facts

is the general taken-for-true idea, not necessarily premature or biased
presupposition
vsassumption
5 7.7

A belief people accept as true before they discuss something

is similar but used more generally beyond argument or action
postulate
vsassumption
  • Specialized
4 8.1

An idea accepted as true without proof and used to build a theory

is the general taken-for-true idea used in everyday reasoning too
basic assumption
vsassumption
4 3.3

A simple idea or belief that people accept without proof and that supports an argument

is any taken-for-true idea, not only the deepest or most basic one
preconceived idea
vsassumption
3 4.3

An opinion you make before you know the facts

is neutral about timing, covering beliefs adopted with or without prior evidence
surmise
vsassumption
3 7.9

An idea based on little evidence

is firmer, referring to beliefs used as starting points for reasoning
postulation
vsassumption
  • Specialized
1 9.3

An idea people accept without proof and use to build an argument

is similar but applies widely beyond philosophical or formal foundations
supposal
vsassumption
1 9.5

An idea you think may be true

is the broader term for beliefs accepted without proof
premiss
vsassumption
  • Archaic
8.4

A statement accepted as true that is used to reach a conclusion

is the general belief used in many reasoning contexts, not only propositions

Antonyms

1.0

Something that can be shown to be true, not an opinion

certainty
  • Literature
202 3.4

A strong feeling that something is true or will happen

Compounds

A simple idea or belief that people accept without proof and that supports an argument

A Catholic feast celebrating the Virgin Mary being taken up into heaven

How Certain

certainty
  • Literature
202 3.4
conviction
258 4.5
belief
1.1
assumption
513 3.5
supposition
23 7.3
guess
768 1.0

Surface Forms

assumption singular
assumptions plural

Morphology

assumption = assume (transparent) = assume + ion

The noun is a standard nominalization of 'assume' meaning 'to suppose', so 'assumption' as a belief is directly derived.

Etymology

The word assumption comes from the Latin parts ad- 'to' and sumere 'take', so it originally meant 'to take up' an idea. That's why an assumption can mean a belief you 'take' as true without proof.