constancy (uncountable)

1. (uncountable) The quality of being constant; steadiness or faithfulness in action, affections, purpose, etc.
   • c. 1605, William Shakespeare, Macbeth, Act II, Scene 2,

     A little water clears us of this deed: / How easy is it, then! Your constancy / Hath left you unattended.

   • 1814 July, [Jane Austen], chapter III, in Mansfield Park: A Novel. In Three Volumes, volume III, London: Printed for T[homas] Egerton, […], OCLC 39810224 ↗, page 68 ↗:

     And, I do not know that I should be fond of preaching often; now and then, perhaps, once or twice in the spring, after being anxiously expected for half a dozen Sundays together; but not for a constancy; it would not do for a constancy.

   • 1871, Charles Darwin, Descent of Man, chapter 7 "On the Races of Man,"

     Constancy of character is what is chiefly valued and sought for by naturalists.

2. (countable) An unchanging quality or characteristic of a person or thing.
   • 1602, William Shakespeare, All's Well That Ends Well, Act 1, scene ii:

     younger spirits . . .

     whose constancies

     Expire before their fashions.

• constant
• constantly

• French: constance
• German: Konstanz, Beständigkeit
• Portuguese: constância
• Russian: постоя́нство
• Spanish: constancia

• German: Ausdauer
• Portuguese: constância
• Spanish: constancia