ebb

[1]	recede , flow back , subside , go out , go down , fall back/away , retreat , retrocede , retire
[2]	decline , flag , decay , wane , diminish , decrease , drop , slacken , fade (away) , drain (away) , dwindle , peter out , waste (away) , deteriorate
[3]	ebb away , ebb down , ebb out , ebb off

[1]	ebbing , wane
[2]	reflux
[3]	low tide , low water , ebb tide , low point
[4]	decline , decay , decrease , diminution , wane , drop , slackening (off) , dwindling , lessening , deterioration , degeneration