-ancy

from The Century Dictionary.

• A modern extension of -ance, in imitation of the original Latin -ant-i-a, and perhaps also of -acy: see -ance and -cy, and cf. -ence, -ency. The two forms seldom differ in force.

from the GNU version of the Collaborative International Dictionary of English.

• A suffix expressing more strongly than -ance the idea of quality or state.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• suffix a condition or quality