bit on the side

a bit on the side

1. A person who is involved in a sexual relationship with someone who is married. Primarily heard in UK, Australia. I spotted Harry at the diner with a woman much younger than his wife. She must be his bit on the side.
2. Such a relationship. I spotted Harry at the diner with a woman much younger than his wife. I think he's having a bit on the side.
3. Income from an additional job. My wife has started to earn a bit on the side to help us offset all the extra expenses from the renovation.
See also: bit, on, side

bit on the side

1 a person with whom you are unfaithful to your partner. 2 a relationship involving being unfaithful to your partner. 3 money earned outside your normal job. informal
See also: bit, on, side