Other forms: worshippers
A worshipper is a person taking part in an act of devotion. Worshippers gathered, a lone worshipper, worshippers at prayer.
It names somebody present at the act rather than a believer generally, which is why a congregation counts worshippers and a census counts believers. Note the American spelling worshiper with one p; and that worship is worth plus -ship — it first meant the condition of being worthy.
1nounworshipperA person taking part in an act of devotion.
“Worshippers filled the mosque for Friday prayers.”
worshipper is a person at devotion.
Worship plus -er. Worship is worth plus -ship, and first meant the condition of being worthy.
Middle English
wirshiper
English, today
worshipper
Middle English wirshiper, worchyppar, worscheper, worschepour, worschiper, worschippar, worshipore; equivalent to worship + er.
Etymology from Wiktionary, CC BY-SA