The Collaborative International Dictionary
Vaingloriousness
Vainglorious \Vain`glo"ri*ous\, a.
Feeling or indicating vainglory; elated by vanity; boastful.
``Arrogant and vainglorious expression.''
--Sir M. Hale. --
Vain`glo"ri*ous*ly, adv. -- Vain`glo"ri*ous*ness, n.
Wiktionary
vaingloriousness
n. vainglory