Source : Webster's Revised Unabridged Dictionary (1913)

Loathly \Loath"ly\, a. [AS. l[=a]?lic.]
   Loathsome. [Obs.] `` Loathly mouth.'' --Spenser.

Loathly \Loath"ly\, adv.
   1. Unwillingly; reluctantly.

            This shows that you from nature loathly stray.
                                                  --Donne.

   2. (?) So as to cause loathing. [Obs.]

            With dust and blood his locks were loathly dight.
                                                  --Fairfax.

Source : WordNet®

loathly
     adj : highly offensive; arousing aversion or disgust; "a
           disgusting smell"; "distasteful language"; "a loathsome
           disease"; "the idea of eating meat is repellent to me";
           "revolting food"; "a wicked stench" [syn: {disgusting},
            {disgustful}, {distasteful}, {foul}, {loathsome}, {repellent},
            {repellant}, {repelling}, {revolting}, {skanky}, {wicked},
            {yucky}]