someone who waits on or tends to or attends to the needs of another Synonym(s):attendant, attender, tender
a person who is present and participates in a meeting; "he was a regular attender at department meetings"; "the gathering satisfied both organizers and attendees" Synonym(s):attendant, attender, attendee, meeter
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Attender \At*tend"er\, n.
One who, or that which, attends.