These are two words you’d hate to mix up.
Loathe is a verb meaning to “dislike greatly,” as in I loathe my mean grammar teacher!
Loath without an e is an adjective meaning “reluctant,” as in I am loath to studying grammar any more. As a sidenote, loth is a variant of loath in British English but is not widely accepted.
Not a reluctant tip: Loath vs. loathe
