antipathetical vs loath

antipathetical and loath both are adjectives.

Word	Noun	Adjective	Verb	Adverb
antipathetical	No	Yes	No	No
loath	No	Yes	No	No

As adjectives, antipathetical and loath are synonyms defined as:

Other synonyms of antipathetical include antipathetic, averse, indisposed, loth.

antipathetical (adjective)	loath (adjective)
(usually followed by `to') strongly opposed	(usually followed by `to') strongly opposed
characterized by antagonism or antipathy	unwillingness to do something contrary to your custom