give (someone or something) a wide berth
To maintain a good distance from someone or something. Originally referred to ships. Once I learned that there was a lice outbreak, I gave all of my students a wide berth for the rest of the day. We've been giving John a wide berth ever since he dumped our good friend.
give someone or something a wide berth
stay away from someone or something. Berth is a nautical term which originally referred to the distance that ships should keep away from each other or from the shore, rocks, etc., in order to avoid a collision. Therefore, the literal meaning of the expression is ‘steer a ship well clear of something while passing it’.