Answer: sinktothebottom

AnswerCrossword Clue
SINKTOTHEBOTTOMDescend as far as possible, as a shipwreck
SINKTOTHEBOTTOMFail to be buoyant
SINKTOTHEBOTTOMHit a new low?
SINKTOTHEBOTTOMFlunk a buoyancy test
SINKTOTHEBOTTOMReach the lowest point
SINKTOTHEBOTTOMProve not to be buoyant
SINKTOTHEBOTTOMMake a new low