Emily Dickinson Lexicon

CON'STAN-CY, n. [L. constantia, from consto; con and sto, to stand.]

1. Fixedness; a standing firm; hence, applied to God or his works, immutability; unalterable continuance; a permanent state. – Hooker.
2. Fixedness or firmness of mind; persevering resolution; steady, unshaken determination; particularly applicable to firmness of mind under sufferings, steadiness in attachments, and to perseverance in enterprise. Lasting affection; stability in love or friendship.
3. Certainty; veracity; reality. – Shak. Johnson.