Word Origin & History
roarO.E. rarian, probably of imitative origin (cf. M.Du. reeren, Ger. röhren "to roar;" Skt. ragati "barks;" Lith. reju "to scold;" O.C.S. revo "I roar;" L. raucus "hoarse"). The noun is attested from late 14c. Roaring forties in reference to exceptional rough seas between latitudes 40 and 50 south,
EXPANDis attested from 1867.
COLLAPSE