opening up

Verb

open up (third-person singular simple present opens up, present participle opening up, simple past and past participle opened up)

1. (ambitransitive) To open.
   • Some vacancies have opened up due to retirements.
2. (ambitransitive) To widen.
   • The corridor gradually opened up into a triangular room.
3. (transitive) To bring up (a topic etc.).
   • Mr Hollyer opens up three excellent reasons why this man might wish to dispose of his wife. If we accept the suggestion of poisoning—though we have only a jealous woman's suspicion for it—we add to the wish the determination.1914, Ernest Bramah, Max Carrados
4. (ambitransitive) To reveal (oneself); to share personal information about oneself; to become communicative.
   • After three hours of questioning, he finally opened up.
5. (intransitive) To commence firing weapons.
   • As the convoy entered the pass, we opened up on them with everything we had.
6. (figuratively, intransitive) To rain.
   • The sky has really opened up. I've never seen this much rain!

See all 10 meanings of open up