Suppressing resistance, guarantee result (5)
I believe the answer is:
ensue
'result' is the definition.
(to ensue is to occur or result)
'suppressing resistance guarantee' is the wordplay.
'suppressing' indicates named letters should be taken away (suppress can mean to conceal or hide).
'resistance' becomes 'r' (electronics abbreviation).
'guarantee' becomes 'ensure' (synonyms).
'ensure' with 'r' taken away is 'ENSUE'.
(Other definitions for ensue that I've seen before include "Leading directly to" , "Cultivate plants/vegetables" , "Follow later" , "Come about, result in" , "Occur afterwards" .)