Answer: waterwater

AnswerCrossword Clue
WATERWATERThe Ancient Mariner said it.
WATERWATERPart of the Ancient Mariner's plaint.
WATERWATER"..., everywhere": Coleridge
WATERWATERWords with everywhere
WATERWATERRepeated words before "everywhere"
WATERWATERWords from Coleridge