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jactance

noun
jac·​tance | \ˈjaktən(t)s\
variants: or jactancy \-​nsē \
plural jactances or jactancies

Definition of jactance 

: vainglorious boasting jactance, vanity, peculation to the ruin of 20 years' labor— Ezra Pound

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History and Etymology for jactance

Middle French & Latin; Middle French jactance, from Latin jactantia, from jactant-, jactans (present participle of jactare to throw, shake, speak out, boast) + -ia -y

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