The Collaborative International Dictionary
Insolidity
Insolidity \In`so*lid"i*ty\, n. [Pref. in- not + solidity: cf.
F. insolidit['e].]
Lack of solidity; weakness; as, the insolidity of an
argument. [R.]
--Dr. H. More.
Wiktionary
insolidity
n. Lack of solidity; weakness.