1. Having existed for a long time
   "a longstanding friendship"; "the longstanding conflict"

See also: long

• fir tree
• fire
• fire alarm
• fire and brimstone
• fire ant
• fire away
• fire beetle
• fire bell
• fire blight
• fire brigade
• fire chief
• fire code
• fire company
• fire control
• fire control radar
• fire control system
• fire department
• fire door
• fire drill
• fire engine
• fire escape
• fire extinguisher
• fire hook
• fire hose
• fire hydrant