hollow Synonyms

hole vacuous excavate empty holler ravine scaphoid rabbet rut reverberant ravenous retreating reentrant recessed recess spade scoop sophistical socket slade skin-deep sinus sunken shovel shole sepulchral scyphiform scooping quarry purposeless purportless niche navicular muffled mendacious manger lineate lair lacuna keyhole jesuitic interstice nihility nugatory null profitless preterition pointless pocket pit