(US, slang) Out of it, lost; bewildered, stupefied, or daydreaming, due to intoxication, distraction, aimlessness, etc. / Used other than figuratively or idiomatically: see lost, sauce.

There are still chances of recovery or success.

(colloquial, dismissal) Used to rudely tell somebody to go away or leave one alone.

(intransitive) To lose one's way. / (intransitive, of an object) To go missing; to be in a location unknown to someone who is looking for it. / (intransitive) To be absent, to seem to be absent.

(idiomatic) A person or thing that is hopeless or futile.

(US, Canada, Australia, New Zealand) A department, service or location where items that are found can be claimed by their owners.

Having been missing or unknown for a long period of time.

The generation that came of age during World War I. / A group of American expatriate writers living in Paris during the 1920s.

(set phrase, religion) A soul that is destined to go to hell; a person possessing such a soul. / (idiomatic) One who is forlorn, who lacks direction, purpose, or motivation in life.

simple past tense and past participle of lose touch