noun 1.the quality of being unchanging or unwavering, as in purpose,
love, or loyalty; firmness of mind; faithfulness.
2.uniformity or regularity, as in qualities or conditions; invariableness.
Synonyms
1. resolution, steadfastness, fidelity, fealty, loyalty, devotion. 2. permanence, regularity, dependability.
Antonyms
1. irresolution, infidelity. 2. fickleness.