indubitable

English

Etymology

Either from French indubitable or Latin indubitābilis. By surface analysis, in- +‎ dubitable.

Pronunciation

• (UK) IPA^(key): /ɪnˈdjuːbɪtəbəl/
• (US) IPA^(key): /ɪnˈdubɪtəbəl/

• Audio (US):

  (file)

Adjective

indubitable (comparative more indubitable, superlative most indubitable)

1. Clearly true; providing no possibility of doubt.

   The indubitable effect of the potion convinced many nonbelievers.

Synonyms

• undoubtable

Derived terms

• indubitableness
• indubitably

Translations

not dubitable

• Bulgarian: несъмнен (bg) (nesǎmnen)
• Catalan: indubtable
• Dutch: twijfelloos (nl), onbetwijfelbaar (nl)
• Finnish: epäilyksetön, ilmeinen (fi)
• French: indubitable (fr)
• German: unzweifelhaft (de)
• Hungarian: kétségbevonhatatlan (hu)
• Icelandic: efalaus, ótvíræður, óhrekjandi, vafalaus
• Ido: nedubitebla (io)
• Spanish: indudable (es)
• Turkish: sorgulanamaz (tr), şüphesiz (tr)

Noun

indubitable (plural indubitables)

1. That which is indubitable.

   If we build logically upwards from a few indubitables, the whole system must remain correct.

French

Etymology

Borrowed from Late Latin indūbitābilis.

Pronunciation

• IPA^(key): /ɛ̃.dy.bi.tabl/

• Audio (France (Vosges)):

  (file)

Adjective

indubitable (plural indubitables)

1. indubitable

   Synonym: incontestable

Derived terms

• indubitablement

Further reading

• “indubitable”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012

Spanish

Etymology

From Latin indūbitābilis.

Pronunciation

• IPA^(key): /indubiˈtable/ [ĩn̪.d̪u.β̞iˈt̪a.β̞le]
• Rhymes: -able
• Syllabification: in‧du‧bi‧ta‧ble

Adjective

indubitable m or f (masculine and feminine plural indubitables)

1. indubitable

Derived terms

• indubitablemente

Further reading

• “indubitable”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025