Definition of be off in US English:

be off

phrasal verb

  • Go away; leave.

    ‘he was anxious to be off’
    • ‘I've just had a call to say that things have moved on a bit, so we might be off again tomorrow morning.’
    • ‘As usual I was keen to be off so we arrived at the bus station with 15 minutes to wait for the bus up to the airport.’
    • ‘And now be off with you, for I am going to sleep.’
    go away, depart, leave, take off, get out, get out of my sight
    View synonyms