Backfence talk refers to casual conversations or gossip that takes place between neighbors over their backyard fences. While this talk may seem innocent, it can often lead to misunderstandings and rumors. The antonyms for backfence talk would be formal, official or professional talk. When discussing important issues, it is best to have formal talks with colleagues or superiors to ensure transparency and clarity. These discussions can lead to effective problem solving and decision making. Professional talks, on the other hand, can result in meaningful business relationships and successful collaborations. Rather than engaging in backfence talk, it is better to communicate in a constructive and respectful manner.