Answer: treadwater

AnswerCrossword Clue
TREADWATERMake no progress
TREADWATERNeither sink nor swim
TREADWATERStay afloat, in a way
TREADWATERStay afloat in place
TREADWATERRemain upright, in the pool
TREADWATERMark time afloat.
TREADWATERStay afloat in a way
TREADWATERKeep afloat via leg action
TREADWATERGet along, but make no progress