constancy
noun(con-stan-cy)
the quality of being enduring and free from change or variation
Examples:
Early mariners relied on the constancy of the trade winds.
constancy
noun(con-stan-cy)
(psychology) the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation
Synonyms: perceptual constancy,
constancy
noun(con-stan-cy)
faithfulness and dependability in personal attachments (especially sexual fidelity)