revolting

abhorrent abominable beastly damned damndest detestable disgusting evil execrable fetid filthy foul ghoulish grungy gross hateful heinous hideous horrible horrible/horrendous/horrid icky incommunicable indefinable inexpressible insurgent loathsome lurid more evil more horrible more horrible more horrid more horrendous more terrible most evil most horrible most horrible most horrendous most horrid most terrible nauseating nauseous nasty obnoxious objectionable odious offensive rank repugnant repulsive shocking sickening terrible ugly ugly unattractive undescribable unsightly unspeakable unutterable vile vilest yucky