May have strength (5)
I believe the answer is:
might
I believe this is a double definition.
'may' is the first definition.
(synonyms)
'strength' is the second definition.
(I know that might is a type of strength)
'have' is the link.
(Other definitions for might that I've seen before include "It expresses possibility" , "word expressing possibility" , "Force; could" , "Clout" , "May, in the past" .)