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undoubtable

undoubtable

6.8
Certain and clearly true
  • adjective
  • /ʌnˈdaʊtəbl/
translation icon : indudable
  • The undoubtable fact is that water boils at 100 degrees Celsius.

I'm sure I have done the Descartes thing of trying to doubt everything I think I know until I find the one undoubtable thing.

Examples

  • Its lethality during this period is undoubtable.

    Academic text (2001)
  • It is undoubtable that he will win the championship after training so hard.

  • But what was undoubtable at age 7.

    Blog text (12)
  • Zweifler's dedication to her husband was undoubtable and pure.

    Blog text (22)
  • They know people will buy the iPhone; that's undoubtable.

    Blog text (29)
  • His consistent appeals to the undoubtable clarity and simplicity of moral concepts for common cognition in the Groundwork and the Critique only underscore this point.

    Academic text (2017)
  • Her talent for painting is undoubtable; everyone admires her work.

Synonyms

undeniable
vsundoubtable
56 4.2

So clear that people cannot doubt it

states certainty without stressing obviousness or appearance
indisputable
vsundoubtable
22 5.7

You cannot doubt it because it is clearly true

is the general idea of being certain without extra emphasis
irrefutable
vsundoubtable
22 7.8

Impossible to deny or prove wrong

centres on being simply certain, not on disproof methods
incontrovertible
vsundoubtable
  • Formal
11 8.2

Clearly true and impossible to doubt

focuses on plain certainty rather than contesting evidence
unassailable
vsundoubtable
11 8.0

So strong that no one can attack, defeat, or prove it wrong

is about being certain rather than being immune to attack
unshakable
vsundoubtable
  • US
8 4.8

Very strong belief or feeling that cannot be changed

describes certainty itself rather than emotional or firm belief
unimpeachable
vsundoubtable
  • Formal
7 8.2

Very honest and reliable so people cannot doubt it

names pure certainty rather than trustworthiness as its basis
unquestionable
vsundoubtable
7 4.1

Clearly true so no one can doubt it

is the same certainty expressed as a simple adjective
inarguable
vsundoubtable
2 6.7

Impossible to deny or argue with

is the plain expression of being certain rather than debate focus
undoubted
vsundoubtable
2 3.5

Completely certain and accepted by everyone

expresses personal or general certainty without referencing opinion
indubitable
vsundoubtable
  • Formal
1 8.7

Completely certain and clearly true

expresses the same basic certainty in everyday wording
unarguable
vsundoubtable
1 5.9

Impossible to disagree with because the facts are clear

covers simple certainty without framing it as argument-free
unchallengeable
vsundoubtable
1 7.2

So certain that no one can doubt it

is the straightforward idea of being certain and unquestionable
undisputable
vsundoubtable
1 4.7

Certain and impossible to doubt

uses a more general sense of being certain and unquestionable
incontestible
vsundoubtable
  • UK
8.4

Impossible to argue against because the facts are clear

is the basic label for being certain or unquestionable
irrefragable
vsundoubtable
  • Archaic
9.9

Impossible to prove wrong

focuses on simple certainty rather than legal or evidential force
irrebuttable
vsundoubtable
  • Jargon
9.9

Impossible to prove wrong in court

is general certainty without implying formal proof processes
unattackable
vsundoubtable
8.6

Others cannot attack or harm it

expresses simple unquestionable status without focus on attack
inexpugnable
vsundoubtable
9.9

No one can beat or prove it wrong

is the basic idea of being certain, not necessarily invincible

Antonyms

176 3.9

Probably not true or trustworthy

38 3.0

Not likely to be true or real

How Certain

undoubtable
6.8
certain
946 1.0
probable
200 3.4
possible
1.0

Surface Forms

undoubtable positive
undoubtable comparative
undoubtable superlative

Morphology

undoubtable = doubtable (transparent) = un + doubt + able

The word is clearly derived from 'doubtable' with the prefix 'un-' indicating negation.

Etymology

Undoubtable is made from un- 'not' and doubt 'to be unsure', so it literally means 'not able to be doubted' and is used to say something is certain or unquestionable.