Prevent (7)
'prevent' is the definition.
(I know that stop is a more specific form of block)
This is all the clue.
(Other definitions for stop that I've seen before include "cut out" , "Come to a halt" , "Red light signal" , "It could be the organist's principal" , "Quit" .)
'prevent' is the definition.
(averting is a kind of preventing)
This is all the clue.
(Other definitions for avert that I've seen before include "Prevent from happening" , "Stave off" , "Obviate" , "With prominent incisors" , "Fend off" .)
'prevent' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for deter that I've seen before include "Dishearten" , "Cause not to do something" , "Put (someone) off" , "Discourage (an activity)" , "Prevent by instilling fear" .)
'prevent' is the definition.
(debarring is a kind of preventing)
This is all the clue.
(Other definitions for debar that I've seen before include "Stop" , "Shut out, preclude" , "Ban" , "Exclude, prohibit" , "Rule out" .)
'prevent' is the definition.
(bar can mean to prevent or disallow)
This is all the clue.
(Other definitions for bar that I've seen before include "whose moaning Tennyson hoped to prevent?" , "Rigid piece of metal" , "Public house" , "Except; counter" , "Watering hole" .)
'prevent' is the definition.
(I know that obviate is a more specific form of prevent)
This is all the clue.
(Other definitions for obviate that I've seen before include "Preclude" , "Prevent from happening" , "Counter" , "Avoid, prevent" , "Get round or do away with" .)
'prevent' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for inhibit that I've seen before include "Hinder, restrain, prevent" , "Prevent expression of" , "Hold back" , "Limit the range or extent of" , "Endanger" .)