- accomplishment, superfluousness, suitableness, sinew, plenty, evenness, proportion, oversupply, earnings, bountifulness, purity, equality, overabundance, power, enough, health, soundness, fitness, strong point, achievement, heartiness, satisfaction, flair, good fortune, effectiveness, gain, attainment, ability, success, abundance, merit, sufficiency, plentifulness, opulence, genius, win, copiousness, bent, flawlessness, suitability, extra, adequacy, aptitude, excellence, strength, endowment, perfection, amplitude, potency, puissance, excess, wealth, payment, gift, parity, surfeit, knack, advantage, balance, talent.
Substantial error means error in regard to the substance, and is necessarily inadequacy of inward experience. "Orthodoxy: Its Truths And Errors" by James Freeman Clarke
She saw, as with a sudden gift of retrospection, her mother's long battle with inadequacy, and how it had aged her; saw, too, that the battle had been fought unselfishly, since she knew her mother's declaration that she could contentedly " go back to nothing" was no mere petulant boast. "The Grafters" by Francis Lynde