true-blue

listen to the pronunciation of true-blue
English - English
Alternative spelling of true blue
A true-blue supporter of something is someone who is very loyal and reliable
If you describe someone as true-blue, you mean that they are right-wing in their ideas and opinions. Her husband is a true blue Tory
marked by unswerving loyalty; "a true-blue American"; "a reliable true-blue country club conservative
Patriotic for Australia; thoroughly Australian
indubitably loyal or faithful

He was a true blue supporter, and would not listen to what he supposed to be the lies of the opposition.

true, devoted, loyal; conservative
trueblue
Of inflexible honesty and fidelity; a term derived from the true, or Coventry, blue, formerly celebrated for its unchanging color
trueblue
See True blue, under Blue
trueblue
A person of inflexible integrity or fidelity