Word.ws English Dictionary

undecide

undecide verb: to reverse or go back on (a previous decision).

Verb

undecide (third-person singular simple present undecides, present participle undeciding, simple past and past participle undecided)

  1. (transitive) To reverse or go back on (a previous decision).

Forms of undecide

third-person singular presentundecides
present participleundeciding
past participleundecided
pastundecided

Origin of undecide

From un- + decide.

Questions about undecide

What does undecide mean?
Undecide means to reverse or go back on (a previous decision).
What part of speech is undecide?
Undecide is a verb.
What is the past tense of undecide?
The past tense of undecide is undecided.

Words near undecide in the dictionary

  1. undecic
  2. undecidabilities
  3. undecidability
  4. undecidable
  5. undecidably
  6. undecide
  7. undecideable
  8. undecided
  9. undecidedly
  10. undecidedness
  11. undecideds

Source and license

Adapted from Wiktionary: undecide (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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