lost
//lɒst//
Verb
1
Past tense and past participle of lose
I lost my keys yesterday.
Adjective
lostCanonical form
1
Unable to find one's way; not knowing where one is
We got lost in the forest and couldn't find our way back.
2
Unable to be found; missing
I'm looking for my lost keys.
3
Confused or uncertain about what to do or how to proceed
I felt lost when I had to make such an important decision.
4
No longer possessed or retained; having been taken away or destroyed
Many lives were lost in the war.