Synonyms for loon

Noun

1. loon, idler, loafer, do-nothing, layabout, bum

usage: a worthless lazy fellow

2. loon, diver, gaviiform seabird

usage: large somewhat primitive fish-eating diving bird of the northern hemisphere having webbed feet placed far back; related to the grebes

3. addle-head, addlehead, loon, birdbrain, misfit

usage: a person with confused ideas; incapable of serious thought