| Fiducial 1. (a.) Based on faith or trust; confident; undoubting; firm. 2. (a.) Having the nature of a trust; fiduciary; as, fiducial power. Thesaurus Entries balanced, convictional, cool, fast, fiduciary, firm, firm as Gibraltar, imperturbable, in equilibrium, pistic, predictable, reliable, secure, solid, sound, stable, steadfast, steady, substantial, unflappable, unflinching, unshakable, unwavering, well-balanced, without nerves |