Let off steam antonyms

What is the opposite word for Let off steam?

• be calm

  be angry
• limit

  let go
• restrain

  let go
• confine

  let go
• detain

  let go
• imprison

  let go
• suppress
• hold
• keep
• retain
• compliment

  be angry
• praise

  be angry
• flatter

  be angry
• be quiet

  be angry
• be happy
• fasten
• blame
• condemn
• convict
• sentence
• incarcerate
• incriminate
• prevent
• charge
• bind
• collect
• gather
• maintain
• bottle things up