Find Synonyms

assumption Synonyms

Another word for assumption

Choosing another word for assumption depends on context, so the 23 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• noun (Context 1)

A thing that is accepted as true or as certain to happen, without proof.

Usage Example

"The economic forecast is based on the supposition that interest rates will remain stable throughout the year."

Strongest
supposition
presumption
premise
presupposition
Strong
postulate
hypothesis
conjecture
surmise
belief
inference

• noun (Context 2)

The action of taking on power, responsibility, or a specific role.

Usage Example

"Her immediate acceptance of leadership helped steady the organization during the sudden crisis."

Strongest
acceptance
Strong
undertaking
acquisition
adoption
accession
appropriation
seizure

• noun (Context 3)

Arrogance or pretentiousness in manner or attitude.

Usage Example

"He spoke with an air of quiet arrogance that alienated several members of the committee."

Strongest
arrogance
presumption
Strong
pretension
pretentiousness
haughtiness
pomposity
conceit

Opposites of assumption

The opposite of assumption shifts depending on context. Common opposites include:

humility
fact
abdication
proof
modesty
renunciation
certainty
relinquishment
See all opposites of assumption

• Nearby Words

assume
assumedly
assuming
assumption
assumptive
assurance
assure

Cite this Entry

Wordmom. (2026). Synonyms for Assumption. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/assumption
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