Beyond reach, communication, or influence: The expedition was lost to the world for two months.
from The American Heritage Dictionary of the English Language, 4th Edition
Beyond recovery or redemption; fallen or destroyed: a lost soul.
from The American Heritage Dictionary of the English Language, 4th Edition
Completely involved or absorbed; rapt: lost in thought.
from The American Heritage Dictionary of the English Language, 4th Edition
Having not been or unlikely to be won; unsuccessful: a lost battle; a lost cause.
from The American Heritage Dictionary of the English Language, 4th Edition
No longer in existence; vanished or spent: lost youth.
from The American Heritage Dictionary of the English Language, 4th Edition
verb
Past tense and past participle of lose.
from The American Heritage Dictionary of the English Language, 4th Edition
idiom
Be lost on To be beyond the comprehension of: The lecture was lost on us.
from The American Heritage Dictionary of the English Language, 4th Edition
Be lost on To have no effect or influence on: Her advice was lost on me.
from The American Heritage Dictionary of the English Language, 4th Edition
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