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ENGLISH · A WORD WITH POSSIBILITIES

doubler.

One who doubles.

7 characters2 syllables approx.English language

Meaning & usage

noun

  1. One who doubles.

  2. An instrument for augmenting a very small quantity of electricity, so as to render it manifest by sparks or the electroscope.

  3. A metal plate riveted or welded over a preexisting metal structural component to reinforce it and relieve the stress on the preexisting component, or to serve as a patch where part of the original structure has failed or been removed.

    The mechanics fastened a doubler over the hole where the cracked section of the plane's skin had been cut out.
    The airworthiness directive called for riveting a reinforcing doubler to the wing midspar web to keep the spar from buckling under flight loads.

  4. Part of a distilling apparatus for intercepting the heavier fractions and returning them to be redistilled.

  5. A blanket or felt placed between the fabric and the printing table or cylinder.

  6. A person employed in a roller mill to fold the hot metal plates in half.

  7. A device with two electrical plugs that plugs into an electrical outlet, effectively converting the electrical outlet into two; socket converter.

  8. A diaper insert.

Where this word comes from

Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Indo-European *-plos Proto-Indo-European *dwiplós Proto-Italic *dwiplos Proto-Italic *duplos Latin duplus Old French dobleder. Middle English double English double Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English doubler From double (verb) + -er.

noun

  1. A tenement house having two families on each floor.

    US · dialectal

  2. A biplane aeroplane or kite.

    colloquial
Where this word comes from

Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Indo-European *-plos Proto-Indo-European *dwiplós Proto-Italic *dwiplos Proto-Italic *duplos Latin duplus Old French dobleder. Middle English double English double Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English doubler From double (adjective) + -er.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.