Meaning

3 senses
  1. (countable)A faithful partisan or supporter of a cause, person, political party, etc.

  2. (historical, uncountable)A blue dye from Coventry, England, famous for not washing out.

  3. (countable, uncountable)A precisely defined pure blue, as for example web color #0000FF = RGB(0,0,255).

Examples

1 sentences
  1. That girl is a true blue country singer.

Origin

Endocentric compound of true (“loyal, faithful”, adjective) + blue (“steadfastly faithful

Endocentric compound of true (“loyal, faithful”, adjective) + blue (“steadfastly faithful or loyal”, adjective). The symbolism of the colour blue as representing constancy, faithfulness, loyalty, and truth may derive from the constant colour of the sky, or the tendency of certain blue dyes to resist fading, especially those made in Coventry.

Wiktionary, CC BY-SA 4.0 · source

Forms

plural: true blues

See also

neighbours in the dictionary
true blue — meaning, examples, forms, synonyms | Krumeto