1. a person who tells on others or reveals secrets
Usage: informal
2. any of various shorebirds that make loud calls
Usage: ornithology

Examples

• The teacher warned the class not to be a tattler.
• Nobody likes a tattler who reports every small mistake.
• She was known as the office tattler for spreading gossip.
• The children called him a tattler after he told on his classmates.
• A wandering tattler was spotted on the mudflats.
• The gray-tailed tattler is common along Asian coastlines.