Meaning & use

undebatable

adjective·Advanced

Last updated

UK/ˌʌn.dɪˈbeɪ.tə.bəl/
US/ˌʌn.dɪˈbeɪ.t̬ə.bəl/

Meanings

  1. adjectivenot comparable

    So clearly true or settled that reasonable people would not argue about it.

    Grammar: Used after be or before a noun: an undebatable fact.

    Patterns

    • an undebatable fact
    • it is undebatable that something

    It is undebatable that exercise improves health.

    The evidence made her conclusion undebatable.

    He treated his rule as undebatable.

  2. adjectivenot comparable

    Not allowed to be discussed, such as a rule that is fixed by authority.

    Grammar: Suggests a topic that is closed to discussion.

    Patterns

    • an undebatable rule
    • consider something undebatable

    The captain said the curfew was undebatable.

    Some topics were undebatable at family dinners.

    The contract terms are undebatable.

Common combinations

an undebatable fact
The sun rises in the east is an undebatable fact.
undebatable proof
The photo was undebatable proof.
remain undebatable
Safety remains undebatable.
undebatable truth
It is an undebatable truth.

Synonyms and how they differ

indisputable
It is more common and formal, and it means no one can honestly disagree.
undeniable
It stresses that you cannot deny something once you see the proof.
non-negotiable
It suggests a demand that cannot be bargained over, rather than a fact that cannot be argued.
unquestionable
It stresses that nobody could doubt or ask whether it is true.

Opposites

debatablearguable

Word family

debate verb
to discuss reasons for and against
debatable adjective
open to argument
debater noun
a person who debates

Commonly confused: undebatable or indebted?

undebatable vs indebted

Indebted means owing thanks or money and has nothing to do with argument.

Practice

Which word is the best opposite of 'undebatable'?

Make it your own

Write a sentence using “undebatable”, then check it and compare it with the examples above.

Your sentence stays on this page and is not sent anywhere.

Explore more words