1 belonging to/used by only one person/group
ADV. almost the course's almost exclusive concentration on grammar | not necessarily The recording deal is not necessarily exclusive. The band can record material for other companies as well.
PREP. to These products are exclusive to our shops.
2 not welcoming to everyone
VERBS be | become | remain | keep sth The owners of the golf club are determined to keep it exclusive.
ADV. very | quite, rather, somewhat a somewhat exclusive venue | necessarily The school is expensive and necessarily exclusive. | racially, socially
3 not able to exist/be true at the same time
ADV. mutually The two options are not mutually exclusive (= you can have them both).