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constancy Syllabification: con·stan·cy
Pronunciation: /ˈkänstənsē/

Definition of constancy in English:


1The quality of being faithful and dependable.
Example sentences
  • Faithfulness, dedication, constancy and humility are some of the virtues needed to pray well.
  • Yet, despite such constancy and faithfulness on God's part, humanity has not responded with the same love toward him.
  • I've learned that it's unwise to depend entirely upon the constancy of man.
1.1The quality of being enduring and unchanging: the trade winds are noted for constancy in speed and direction
More example sentences
  • Given the assumed constancy of the speed of light, the calculations required to show that result are quite simple.
  • Traditionally associated with durability and constancy, here the vivid green pre-patinated copper is intended to make a bolder statement.
  • The theory of relativity hinges on the constancy of the speed of light.


Late 15th century: from Latin constantia, from constant- 'standing firm' (see constant).

Definition of constancy in:
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