ostentator

archaic

(archaic) a boaster, ostentatious person

Japanese Meaning

自慢屋、見せびらかす人 / 虚栄心の強い人

The ostentator at the banquet loudly flaunted his wealth, ignoring the murmur of disapproval.

宴会にいた自慢屋は、自分の財産を大っぴらに誇示し、非難のざわめきを無視した。

Sense（1）

(archaic) a boaster, ostentatious person

[…] to bee an ostentatour of mine eloquenice.

ostentators

（ plural ）