CONSTANCY

constancy, stability

(noun) the quality of being enduring and free from change or variation; “early mariners relied on the constancy of the trade winds”

constancy

(noun) faithfulness and dependability in personal attachments (especially sexual fidelity)

constancy, perceptual constancy

(noun) (psychology) the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation

Source: WordNet® 3.1

Etymology

Noun

constancy (usually uncountable, plural constancies)

(uncountable) The quality of being constant; steadiness or faithfulness in action, affections, purpose, etc.

(countable) An unchanging quality or characteristic of a person or thing.

Source: Wiktionary

Con"stan*cy, n. Etym: [L. constantia: cf. F. constance. See Constant.]

1. The state or quality of being constant or steadfast; freedom from hange; stability; fixedness; immutabilitu; asm the constancy of God in his nature and attributes.

2. Fixedness or firmness of mind; persevering resolution; especially, firmness of mind under sufferings, steadiness in attashments, or perseverance in enterprise; stability; fidelity. A fellow of plain unoined constancy. Shak. Constancy and contempt of danger. Prescott.

Syn.

– Fixedness; stability; firmness; steadiness; permanence; steadfastness; resolution. See Firmness.

Source: Webster’s Unabridged Dictionary 1913 Edition