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

See also: long

• smut fungus
• smut grass
• smutch
• Smuts
• smuttily
• smuttiness
• smutty
• Smyrna
• Smyrnium
• Smyrnium olusatrum
• Sn
• snack
• snack bar
• snack counter
• snack food
• snacker
• snaffle
• snaffle bit
• snafu
• snag
• snaggy
• snail
• snail bean
• snail butter
• snail darter