- 1 to begin to move The horse started off at a steady trot.
- 2 to begin happening; to begin doing something The discussion started off mildly enough.
- 3 to begin by doing or being something Let's start off with some gentle exercises. We started off by introducing ourselves. + adj. The leaves start off green but turn red later. start off doing something I started off working quite hard, but it didn't last.
- 1[no passive] to make somebody begin doing something What started her off on that crazy idea? Don't say anything to her—you'll start her off again (= make her get angry). start somebody off doing something Kevin started us all off laughing.
- 2to help somebody begin doing something My mother started me off on the piano when I was three. start somebody off doing something His father started him off farming.