Word.ws English Dictionary

undouble

undouble verb: to undo the doubling of; to unfold, or render single again.

Verb

undouble (third-person singular simple present undoubles, present participle undoubling, simple past and past participle undoubled)

  1. (transitive) To undo the doubling of; to unfold, or render single again.
    • So to simulate this, the iterative version needs to repeatedly “undouble” the value, which it will do by calling a function half.2014, Alexander A. Stepanov, Daniel E. Rose, From Mathematics to Generic Programming, page 54

Forms of undouble

third-person singular presentundoubles
present participleundoubling
past participleundoubled
pastundoubled

Origin of undouble

From un- + double.

Questions about undouble

What does undouble mean?
Undouble means to undo the doubling of; to unfold, or render single again.
What part of speech is undouble?
Undouble is a verb.
What is the past tense of undouble?
The past tense of undouble is undoubled.

Words near undouble in the dictionary

  1. undos
  2. undose
  3. undosed
  4. undoting
  5. undotted
  6. undouble
  7. undoubled
  8. undoubles
  9. undoubling
  10. undoubtability
  11. undoubtable

Source and license

Adapted from Wiktionary: undouble (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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