lost
lost
adjective
Unable to find one's way, or no longer possessed or known.
"I'm completely lost without my phone."
adjective
Wasted, no longer existing, or failed to be won or achieved.
"It was a lost opportunity for us."
Thesaurus
Synonyms: disoriented, unoriented, confused, baffled, at sea, bewildered, mixed-up, confounded, bemused, befuddled, mazed, perplexed