Sink (8)

'sink' is the definition.
(submerging is a kind of sinking)
This is all the clue.
(Other definitions for submerge that I've seen before include "Sink - inundate" , "(Submarine) dive" , "Cover" , "Engulf, immerse" , "Place below water, flood" .)
'sink' is the definition.
(sagging is a kind of sinking)
This is all the clue.
(Other definitions for sag that I've seen before include "Droop, sink in the middle" , "Decline" , "Hang down loosely" , "Sink, hang down" , "Sink under weight" .)
'sink' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for decline that I've seen before include "The Latin scholar must" , "Start to fail" , "Diminution" , "Refuse to accept" , "Fade" .)
'sink' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for torpedo that I've seen before include "Self-propelled underwater explosive device" , "electric ray" , "Explosive underwater projectile" , "ruin" , "American sandwich made with a long split roll" .)
'sink' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for basin that I've seen before include "container" , "Land drained by a river" , "dock, maybe" , "Stoup" , "River-drained area" .)
'sink' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for invest that I've seen before include "Formally place in office" , "Lay siege" , "Put money in to make a profit" , "speculate?" , "Put money or effort into" .)