Crossword Genius

Stop husband getting key (4)

Ross

I believe the answer is:

halt

'stop' is the definition.
(halt can mean to stop)

'husband getting key' is the wordplay.
'husband' becomes 'h' (abbreviation).
'getting' is a charade indicator (letters next to each other).
'key' becomes 'alt' (the Alt keyboard button).
'h'+'alt'='HALT'

(Other definitions for halt that I've seen before include "Limp; minor station" , "Pull up" , "Stop; minor station" , "Stop, small station" , "Cease" .)

I've seen this clue in The Guardian.
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