solvency (n.)

1650s, "able to pay all one owes," from French solvent, from Latin solventem (nominative solvens), present participle of solvere "to loosen, release, accomplish, fulfill," from PIE *se-lu-, from reflexive pronoun *s(w)e- (see idiom) + root *leu- "to loosen, divide, cut apart." The chemical meaning "having the power of dissolving" is by 1680s.

abstract noun suffix of quality or rank, from Latin -cia, -tia, from Greek -kia, -tia, from abstract ending -ia (see -ia) + stem ending -c- or -t-. The native correspondents are -ship, -hood.