Strongly opposed (to) (6)
(Other definitions for averse that I've seen before include "Ill-disposed to (a poem?)" , "Disinclined - sounds like a poem" , "Hostile" , "Not keen" , "'Opposed, disinclined (6)'" .)
(Other definitions for loth that I've seen before include "Reluctant or averse" , "Reluctant or disinclined" , "Unwilling to obey" , "Reluctant, unwilling" , "Not keen" .)