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. Although we were off for the rest of the day, we couldn't go to the beach because it started to rain.