bumptiouslyadv.
/ˈbʌm(p)ʃəsli/, U.S. /ˈbəm(p)ʃəsli/ In an irritatingly self-assertive or conceited manner.
ΘΚΠ
the mind > emotion > pride > self-assertiveness > [adverb]
crousea1525
forwardly1552
cockishly1570
officiously1598
cockingly?1734
protrusively1833
perkingly1841
self-assertingly1841
perkily1843
bumptiously1844
cockily1855
chestily1908
with (an) attitude1975
1844 Lit. Gaz. & Jrnl. Belles Lettres 3 Feb. 75/3 Having studied these portions bumptiously, it is believed..that ‘there were no fear of marriage’.
1871 M. Collins Marquis & Merchant I. i. 17 That long-legged isosceles triangle that bumptiously bestrides the asses' bridge.
1936 E. J. Young Powerful Amer. xiv. 272 There has been an attempt by this people to be boldly, one might say bumptiously, realistic.
2001 S. Brett Death on Downs xvi. 112 Then the presenter moved bumptiously on to introduce an item about a Jack Russell terrier in Gosport who had learned to use the cat-flap.
This entry has been updated (OED Third Edition, September 2018; most recently modified version published online December 2021).
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adv.1844