The old well is a 'dependable' source of water. [=there is always water in the old well]
He's the team's most 'dependable' [='consistent'] player.
a 'dependable' [='reliable'] old car
(..) to their ideal monster... -( roars ) -( screaos ) to produce superior scream refined into clean, dependable energy. Every time you turn something on Monsters, Incorporated is there. I'm Monsters, Incorporated! (..)2001 Monsters, Inc.