true-blue

from WordNet (r) 3.0 (2006)

true-blue
    adj 1: marked by unswerving loyalty; "a true-blue American"; "a
           reliable true-blue country club conservative"

from The Collaborative International Dictionary of English v.0.48

True-blue \True"-blue`\, a.
   Of inflexible honesty and fidelity; -- a term derived from
   the true, or Coventry, blue, formerly celebrated for its
   unchanging color. See {True blue}, under {Blue}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

True-blue \True"-blue`\, n.
   A person of inflexible integrity or fidelity.
   [1913 Webster]

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