undouble

U1N1D2O1U1B3L1E1

verb

To undo the doubling of; to unfold, or render single again.

Scrabble 11
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Meanings

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

present singular third person undoubles · participle present undoubling · participle past undoubled · past undoubled

  1. transitiveTo 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

Origin

From un- + double.

Full word history & related roots →
Cite this entry
APA

undouble. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/undouble

MLA

“undouble.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/undouble. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “undouble,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/undouble.

Source: undouble on Wiktionary, CC BY-SA 4.0.