Noah Webster
Constancy
CONSTANCY, noun [Latin , to stand.]
1. Fixedness; a standing firm; hence, applied to God or his works, immutability; unalterable continuance; a permanent state.
2. Fixedness or firmness of mind; persevering resolution; steady, unshaken determination; particularly applicable to firmness of mind under sufferings, to steadiness in attachments, and to perseverence in enterprise. Lasting affection; stability in love or friendship.
3. Certainty; veracity; reality.