Definition of lost
1 : not made use of, won, or claimed a lost opportunity
2a : no longer possessed a lost reputationb : no longer known a lost tunnel
3 : ruined or destroyed physically or morally : desperate a lost soul
5a : unable to find the wayb : no longer visible lost in the crowdc : lacking assurance or self-confidence : helpless lost without his glasses
7 : not appreciated or understood : wasted their jokes were lost on me
8 : obscured or overlooked during a process or activity lost in translation
lostnessplay \ˈlȯs(t)-nəs\ noun
Examples of lost in a Sentence
He was looking for his lost keys.
Many have tried to find the ruins of the lost city.
We took a wrong turn and got lost.
Hold my hand. I don't want you to get lost.
He has been trying to recapture his lost youth.
The original music is lost to us forever.
Origin and Etymology of lost
past participle of lose
First Known Use: 15th century
LOST Defined for English Language Learners
Definition of lost for English Language Learners
: unable to be found
: not knowing where you are or how to get to where you want to go : unable to find your way
: no longer held, owned, or possessed
LOST Defined for Kids
Definition of lost for Students
1 : unable to find the way a lost puppy
2 : unable to be found lost luggage
3 : not used, won, or claimed a lost opportunity
4 : no longer possessed or known a lost art long lost cousins
5 : fully occupied lost in thought
6 : not capable of succeeding a lost cause
Legal Definition of lost
1 : not made use of, won, or claimed lost opportunity costs
2 : unintentionally gone out of or missing from one's possession or control
3 : ruined or destroyed physically; also : in an unknown physical condition or location a lost ship
Seen and Heard
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