ostentatiously is a form of:

Ostentatious



adjective
1.
(Shoey; pretentious; done to impress people or to attract attention) ដែលសម្ដែងឬបញ្ចេញ
Example: An ostentatious show of knowledge.
ENGLISH MEANING
adjective
1.
Fond of, or evincing, ostentation; unduly conspicuous; pretentious; boastful.