Significant ___ (partner) (5)
I believe the answer is:
other
(Other definitions for other that I've seen before include "Alternate; additional" , "Remaining" , "not like you" , "Alternative - unrelated" , "One may be significant" .)
I believe the answer is:
other
(Other definitions for other that I've seen before include "Alternate; additional" , "Remaining" , "not like you" , "Alternative - unrelated" , "One may be significant" .)