Definition of by invitation only
- The event is by invitation only.
: the act of inviting
: an often formal request to be present or participate
: incentive, inducement
: unquestionably the best : peerless
: alone in a class or category : sole
: having no brother or sister
: as a single fact or instance and nothing more or different : merely
: solely, exclusively
: at the very least
: with the restriction that : but
: and yet : however
: were it not that : except
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