Answer: slough

AnswerCrossword Clue
SLOUGHSwamp
sloughto cast off
sloughmuddy area or swamp
sloughto shed
sloughto treat as slight or trivial
sloughstate of despair
SLOUGHBackwater
SLOUGHShed (with "off")
SLOUGHStagnant swamp
SLOUGHCast (off)
SLOUGHJettison
SLOUGHState of deep despair
SLOUGH... of Despond, in "Pilgrim's Progress"
SLOUGHSwamp or bog.
SLOUGHPlace of deep mud.
SLOUGHDiscard.
SLOUGHDiscard, with "off"
SLOUGHShed, with "off"