- (idiomatic) To relax; to make quieter or less obtrusive; to make milder.
- Ask them to tone down that orange and pink color scheme a bit.
- I hope they'll tone it down and stop arguing so much.
- To moderate or relax; to diminish or weaken the striking characteristics of; to soften.
- To make a television program, piece of writing, etc. less offensive and so more suitable for a family audience.