*off
(on something) 1. incorrect in one's planning or prediction. (*Typically: be ~; get ~.) I was off on my estimates a little bit. I guess I was off too much.
2. to have started on something, such as a task or a journey. (*Typically: be ~; get ~.) What time should we be off on our trip? We should be off by dawn. I'm off on my diet again.
3. Sl. to get high on some kind of drug. Max likes to get off on marijuana.
*off (work)
and off from work; off of work 1. having left one's work at the end of the day. (*Typically: be ~; get ~.) What time do you get off from work? I get off work about five o'clock. She gets off from work later than I do.
2. absent from one's work with permission. (*Typically: be ~; get ~.) I think I can get off of work so I can go to the doctor. Sorry, I can't join you. Things are busy at the office, and I can't get off.