1. Showing or motivated by sympathy and understanding and generosity
   - charitable, benevolent, kindly, sympathetic, good-hearted, large-hearted 
2. Freely communicative; candidly straightforward
   "openhearted advice"

See also: communicative, communicatory, kind

• coal mine
• coal miner
• coal miner's lung
• coal oil
• coal scuttle
• coal seam
• coal shovel
• coal tar
• coal tongs
• coal-black
• coal-burning
• coal-fired
• coal-tar creosote
• coalbin
• coaler
• coalesce
• coalesced
• coalescence
• coalescency
• coalescent
• coalescing
• coalface
• coalfield
• coalfish
• coalhole