An example of something that would be described as loathsome is an offensive philosophy such as racism or bigotry.
Origin of loathsomeMiddle English lothsum
Origin of loathsomeMiddle English lothsome : loth, hateful; see loath + -som, adj. suff.; see –some1.
(comparative more loathsome, superlative most loathsome)
- Nouns to which "loathsome" is often applied: disease, creature, thing, person, man, woman, dungeon, place, world, smell, act.
From Middle English lothsum, as if loath +"Ž -some.