1. (n.) One who eats at the same table.

2. (n.) An animal, not truly parasitic, which lives in, with, or on, another, partaking usually of the same food. Both species may be benefited by the association.

3. (a.) Having the character of a commensal.

cannibal cannibalistic carnivorous coacting coactive coadjutant coadjuvant coefficient collaborative collective collectivist collectivistic collusive combined common communal communalist communalistic communist communistic communitarian concerted concordant concurrent concurring conniving cooperant cooperating cooperative dietetic dining eating ecological ecotopic ecumenic feeding fellow flesh-eating fruitarian gastronomic gluttonous grain-eating graminivorous granivorous grass-eating harmonious harmonized herbivorous insect-eating insectivorous joint lactovegetarian man-eating meat-eating mensal mutual noncompetitive nourishing nutritious omnivorous omophagous pantophagous parasitic phytivorous phytophagous plant-eating postprandial prandial predacious preprandial reciprocal symbiotic synergetic synergic synergistic uncompetitive vegetable-eating vegetarian