either-or adjective 2noun 1forms 1 adjective2 •Describing a situation in which there are only two choices. •Describing a situation in which there is a choice between two different plans of action, but both together are not possible. noun1 •A situation in which there is a choice between two different plans of action, but both together are not possible.Using existing housing better and building new homes are not either/ors but complementary. Doing both will mean a faster (and greener) solution. — 2024 formseither-ors