be off

be off  {v. phr.}

1.  {v.}

To be in error; miscalculate.

The estimator was off by at least 35% on the value of the house.

2.  {v.}

To leave.

Jack ate his supper in a hurry and was off without saying goodbye.

3.  {adj.}

Cancelled; terminated.

The weather was so bad that we were told that the trip was off.

4.  {adj.}

Crazy.

I'm sure Aunt Mathilda is a bit off; no one in her right mind would say such things.

5.  {adj.}

Free from work; having vacation time.