1. Disclosing unintentionally
   "a telltale panel of lights"; "a telltale patch of oil on the water marked where the boat went down"
   - revealing, telling

1. Someone who gossips indiscreetly
   - tattletale [US], tattler, taleteller, talebearer, blabbermouth 
2. [Brit] Someone who reports another person's wrongdoings to someone in authority
   - grass [Brit], snitch

Derived forms: telltales

See also: informative, informatory

Type of: gossip, gossiper, gossipmonger, newsmonger, rumormonger [US], rumourmonger [Brit, Cdn]

Encyclopedia: Telltale

• punning
• punster
• punt
• Punta Arenas
• punter
• punting
• puny
• pup
• pup tent
• pupa
• pupal
• pupate
• pupet regime
• pupil
• pupillary
• pupillary reflex
• pupillary sphincter
• puppet
• puppet government
• puppet leader
• puppet play
• puppet ruler
• puppet show
• puppet state
• puppeteer