1. Causing or able to cause nausea
   - nauseating, nauseous, noisome, queasy, offensive, sickening, vile, loathful [archaic] 
2. Highly offensive; arousing aversion or disgust
   "a loathsome disease"
   - disgusting, disgustful [archaic], distasteful, foul, loathly, repellent, repellant, repelling, revolting, skanky, wicked, yucky, loathful [archaic], yukky

See also: loathsomeness, offensive, unwholesome

Encyclopedia: Loathsome

• man-size
• man-sized
• man-to-man
• mana
• manacle
• manage
• manageability
• manageable
• manageableness
• manageably
• managed economy
• management
• management consultant
• management consulting
• management control
• management personnel
• manager
• manageress
• managerial
• managerially
• managership
• managing director
• managing editor
• Managua
• manakin