All 3 Uses

loathe
in
City of Bones
(Auto-generated)

Valentine never lost that— neither his destructive idealism nor his passionate loathing of anything he considered 'nonhuman.'†
Chpt 11 *

loathing = disgust or intense dislike
Alec asked Clary, looking at her with veiled loathing.†
Chpt 18
The look on his face was a mixture of exultation and self-loathing.†
Chpt 20

Definitions:

(1) (loathe)
hate, detest, or intensely dislike

Word Confusion: Do not confuse loathe with loath which sounds very similar or the same. Loathe is a verb while loath is an adjective describing "reluctance or unwillingness to do something." Note that loathing and loathsome are forms of the verb loathe even though both word forms lack the "e". Occasionally, you will see loath spelled as loathe even in a published book, but it is rare enough that it is generally considered an error rather than a non-standard spelling.
(2) (meaning too rare to warrant focus)