Sinclair

S1I1N1C3L1A1I1R1
UK/sɪŋˈklɛə/US/sɪŋˈklɛəɹ/

proper noun

A Scottish surname transferred from the given name, that of a clan.

CommonScrabble 10

Meanings

proper noun

alternative Sinclaire · alternative Sinclare · alternative Sinclar · alternative Saint Clair · alternative Saint-Clair · alternative St Clair · alternative St. Clair · alternative St-Clair · alternative Saint Claire · alternative Saint-Claire · alternative St Claire · alternative St. Claire · alternative St-Claire · alternative Saint Clare · alternative Saint-Clare · alternative St Clare

  1. A Scottish surname transferred from the given name, that of a clan.

    On a merchant ship, Father Sinclair had to do safety drills every 10 days. On a fishing vessel, it’s monthly, and there is no requirement to check the log to see if the drill has been done or done correctly.

    2025 October 21, Rose George, “‘I knew in my head we were dying’: the last voyage of the Scandies Rose”, in The Guardian
    1 more example

    In molecular biologist David Sinclair’s lab at Harvard Medical School, old mice are growing young again. Using proteins that can turn an adult cell into a stem cell, Sinclair and his team have reset aging cells in mice to earlier versions of themselves.

    2022 June 2, Sandee LaMotte, “The ‘Benjamin Button’ effect: Scientists can reverse aging in mice. The goal is to do the same for humans”, in CNN
  2. A male given name transferred from the surname.
  3. A placename:
    1. A community in the Rural Municipality of Pipestone, Manitoba, Canada.
    2. An unincorporated village in Square Lake unorganised territory, Aroostook County, Maine.
    3. An unincorporated community in Preston County, West Virginia, named after Sinclair Oil Corporation.

Origin

Derived from Saint Clare, to whom the clan's churches were dedicated.

Full word history & related roots →

Rhymes & wordplay

Rhymes with Sinclair

All rhymes →
Cite this entry
APA

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

MLA

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

Chicago

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

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