Loose men terribly in need of company? (8)
I believe the answer is:
lonesome
'in need of company?' is the definition.
'loose men terribly' is the wordplay.
'terribly' is an anagram indicator.
'loose'+'men'='loosemen'
'loosemen' is an anagram of 'LONESOME'.
(Other definitions for lonesome that I've seen before include "Isolated" , "Are you -- tonight (Elvis)" , "Trail of the - Pine (Laurel and Hardy in Way Out West)" , "Dejected by lack of companions" , "Sole" .)