Amoebic refers to organisms that have a shape or structure resembling an amoeba, such as amoebic dysentery or amoebic meningitis. Its antonyms are non-amoebic, non-amoeboid, non-protist, and non-eukaryotic. Non-amoebic refers to anything that is not related to or resembling an amoeba, while non-amoeboid pertains to something lacking the typical spherical, blob-like form of an amoeba. Non-protist and non-eukaryotic, on the other hand, describe organisms that are not classified as single-celled eukaryotic life forms, as is the case with amoebae. These antonyms serve to illustrate the diverse range of living creatures and biological structures that exist in the natural world.