Find Antonyms

suppose Antonyms

Opposite of suppose

Because the opposite of suppose shifts with each meaning, the 16 antonyms and opposite words below are separated across 4 exact definitions and ranked by contrast strength.
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• verb (Context 1)

To assume that something is the case on the basis of evidence or probability, without having definitive proof.

Usage Example

"I know the train was delayed by the heavy snowfall this morning."

Strongest
know
Strong
prove
verify
confirm
doubt
disbelieve

• verb (Context 2)

To be required, expected, or permitted to do something according to a rule, custom, or arrangement (used in the passive voice).

Usage Example

"All visitors are supposed to sign in at the front desk before entering the building."

Strong
forbid
prohibit
excuse
exempt

• verb (Context 3)

To consider or accept something as a hypothesis or premise for the sake of argument or investigation.

Usage Example

"prove that the company doubles its production capacity over the next five years."

Strong
prove
demonstrate
verify
refute
disprove

• verb (Context 4)

To require or imply something as a necessary prior condition or logical consequence.

Usage Example

"This scientific theory supposes the existence of dark matter throughout the universe."

Strong
preclude
exclude
contradict

Similar words to suppose

Words similar to suppose shift depending on context. Common synonyms include:

presuppose
assume
hypothesize
presume
expect
postulate
require
posit
See all synonyms of suppose

Cite this Entry


Wordmom. (2026). Antonyms for Suppose. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/suppose
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