adj. 25B6; adjective
gale force winds made fishing impossible : NOT POSSIBLE, out of the question, unfeasible, impractical, impracticable, non-viable, unworkable; unthinkable, unimaginable, inconceivable.
an impossible dream : UNATTAINABLE, unachievable, unobtainable, hopeless, impractical, implausible, far-fetched, impracticable, unworkable.
food shortages made life impossible : UNBEARABLE, intolerable, unendurable.
(informal) an impossible woman : UNREASONABLE, objectionable, difficult, awkward; intolerable, unbearable, unendurable; exasperating, maddening, infuriating.
attainable, bearable.