Leave/let something alone Definition 1 of 3Pro Tip 1/3Respect Privacy Used when someone's personal space or belongings need to be respected. Please leave my diary alone, it's private. Pro Tip 2/3Implying Warning Can imply a warning to avoid potential danger or trouble. Leave that wasp nest alone or you'll get stung! Pro Tip 3/3Not Yet Time Suggests it's not the right time to engage with something. Leave the cookies alone; they're for after dinner.