<p><strong>Adjective</strong></p><ul><li>no longer possessed or retained: lost friends.</li><li>no longer to be found: lost articles.</li><li>having gone astray or missed the way; bewildered as to place, direction, etc.: lost children.</li><li>not used to good purpose, as opportunities, time, or labor; wasted: a lost advantage.</li><li>being something that someone has failed to win: a lost prize.</li><li>ending in or attended with defeat: a lost battle.</li><li>destroyed or ruined: lost ships.</li><li>preoccupied; rapt: He seems lost in thought.</li><li>distracted; distraught; desperate; hopeless: the lost look of a man trapped and afraid.</li></ul><p><strong>Verb (used with or without object)</strong></p><ul><li>simple past tense and past participle of lose.</li></ul>