Crossword Genius

Force most of the decay (6)

Ross

I believe the answer is:

thrust

'force' is the definition.
(thrusting is a kind of forcing)

'most of the decay' is the wordplay.
'most of' means to remove the last letter.
'decay' becomes 'rust' (rusting is a kind of decaying).
'the' with its last letter taken away is 'th'.
'th'+'rust'='THRUST'

(Other definitions for thrust that I've seen before include "Pierce" , "Push forcibly, say sword" , "Sudden lunge or attack" , "Push powerfully; stab" , "Lunge forward" .)

I've seen this clue in The Guardian.
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