open up

verb

1. cause to open or to become open

   verb.contact

   Synonyms open

   Antonyms close shut

   Source: WordNet 3.0

2. become available

   verb.change

   Source: WordNet 3.0

3. make available

   verb.change

   Synonyms distribute open

   Source: WordNet 3.0

4. open up an area or prepare a way

   verb.creation

   Synonyms pioneer

   Source: WordNet 3.0

5. start to operate or function or cause to start operating or functioning

   verb.social

   Antonyms close close down close up fold shut down

   Source: WordNet 3.0

6. become open

   verb.contact

   Source: WordNet 3.0

7. talk freely and without inhibition

   verb.communication

   Antonyms be quiet belt up button up clam up close up dummy up keep mum shut up

   Source: WordNet 3.0