grandiloquence
definition
a pompous or extravagant way of speaking or writing
example
The politician's grandiloquence was evident in his lengthy speeches, filled with elaborate rhetoric and lofty promises.
synonyms
verbositypompousnessostentation
word origin — derived from the Latin 'grandiloquentia', from 'grandis' meaning 'grand' and 'loqui' meaning 'to speak'