deep blue

adjective

An intense, relatively dark blue.

“the azure of her Gypsy Spanish eyes”

Similar
azure
OriginMiddle English depe blew →
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Meanings

adjective
  1. An intense, relatively dark blue.

    Synonyms: azure

  2. USgovernmentOf a geographic area, state, or district, heavily and consistently voting for the Democratic Party.
noundeep blue (countable and uncountable, plural deep blues)

plural deep blues

  1. countableuncountableAn intense, relative dark blue.

    the azure of her Gypsy Spanish eyes

    Synonyms: azure

Synonyms & antonyms

adjectiveAn intense, relatively dark blue.

Similar
azure

nounAn intense, relative dark blue.

Similar
azure

Origin

  1. Middle Englishdepe blew
  2. Englishdeep blue

From Middle English depe blew, equivalent to deep + blue.

More words from Middle English

Full word history & related roots →

Translations

Greek βαθύ μπλε
  • βαθύ μπλε (vathý ble)intense blue — see also dark blue, navy, navy blue
Cite this entry
APA

deep blue. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/deep%20blue

MLA

“deep blue.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/deep%20blue. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “deep blue,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/deep%20blue.

Source: deep blue on Wiktionary, CC BY-SA 4.0.