Question

A
A person who is invited to a place or to a
special event
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Answer 1

Answer:

invitee NOUN

someone who has been invited to an event

host NOUN

someone who invites people to a meal or party, or to stay in their home. A woman who does this is sometimes called a hostess

hostess NOUN

a woman who invites someone to a meal or party, or to stay for a short time in her home. A man who does this is called a host.

guest NOUN

someone who you have invited to your home, for a party or a meal, or to stay the night

company NOUN

a guest or guests

guest of honour NOUN

an important guest at a meeting, party, or other event

reveller NOUN

MAINLY LITERARY someone who enjoys themselves at a lively and noisy party or celebration by dancing, singing, and drinking alcohol

socialite NOUN

someone who goes to social events organized by fashionable people

man about town NOUN

a man who goes to a lot of fashionable parties, restaurants, clubs etc

party animal NOUN

INFORMAL someone who enjoys going to lots of parties

Answer 2

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Inviter is someone that invites. Generally, the thing that instigates the action will have an -er ending, and the thing that is in receipt will have -ee ending. It could be called a "host", for one, in case he invites people to a party which he is holding.