OSTENTATIOUSLY
ostentatiously, showily
(adverb) with ostentation; in an ostentatious manner; “Mr Khrushchev ostentatiously wooed and embraced Castro at the U.N. general assembly”
Source: WordNet® 3.1
Etymology
Adverb
ostentatiously (comparative more ostentatiously, superlative most ostentatiously)
In an ostentatious manner; extravagantly or flamboyantly.
Source: Wiktionary
OSTENTATIOUS
Os`ten*ta"tious, a.
Definition: Fond of, or evincing, ostentation; unduly conspicuous;
pretentious; boastful.
Far from being ostentatious of the good you do. Dryden.
The ostentatious professions of many years. Macaulay.
– Os`ten*ta"tious*ly, adv.
– Os`ten*ta"tious*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition