off the deep end

see go off the deep end.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Related Words for off the deep end

foolhardy, ill-considered, thoughtless, irresponsible, careless, unwise, ill-advised, foolish, reckless, tricky, uncertain, unhealthy, unsound, treacherous, hazardous, unsafe, precarious, perilous, sensitive, delicate