1.
the ~ crowd; the ~ group; the ~ contingent
Attaches to a noun to name the set of people who share an attribute, position, or attitude — for example 若手勢 (the younger contingent) or ガチ勢 (the serious players).
From 勢 (force, troops), voiced to ぜい as a suffix. Originally used of military forces and sports contingents; it is now freely productive online, where new ~勢 words are coined constantly.
Common examples
- 上位勢: the top-ranked competitors
- 若手勢: the younger group
- ガチ勢: the hardcore, serious players
- エンジョイ勢: the casual players
- 社会人勢: the working-adult contingent
Register: the established combinations (上位勢, 若手勢) appear in sports reporting; freshly coined ones are casual internet usage.