na-adjective, noun
prosperity; bustling prosperity
A literary, somewhat archaic term describing a place or scene as thriving and bustling with activity. Rare in everyday speech; more common modern equivalents include 繁栄 (はんえい) or にぎわい.
かつて殷賑を極めた港町も、今は静かな漁村に過ぎない。
The port town that once enjoyed great prosperity is now just a quiet fishing village.
殷賑な市場の描写が、その小説の冒頭にある。
A description of a bustling marketplace appears at the beginning of that novel.