Tested and proved to be worthy or good.
Faithful to those persons, ideals, etc. that one is under obligation to defend, support, or be true to
Strong; solidly made; substantial
The definition of steadfast is fixed, firm and staying strong.
That can be relied upon; dependable; trustworthy
Find another word for true-blue. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for true-blue, like: tried-and-true, loyal, staunch, dependable, reliable, faithful, in good faith, steadfast and trusty.