Source : Webster's Revised Unabridged Dictionary (1913)

Disgustful \Dis*gust"ful\, a.
   Provoking disgust; offensive to the taste; exciting aversion;
   disgusting.

         That horrible and disgustful situation.  --Burke.

Source : WordNet®

disgustful
     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},
            {distasteful}, {foul}, {loathly}, {loathsome}, {repellent},
            {repellant}, {repelling}, {revolting}, {skanky}, {wicked},
            {yucky}]