Dictionary.net

deeply absorbed in thought; "as distant and bemused as a professor listening to the prattling of his freshman class"; "lost in thought"; "a preoccupied frown"

no longer known; irretrievable; "a forgotten art"; "a lost art"; "lost civilizations"

no longer in your possession or control; unable to be found or recovered; "a lost child"; "lost friends"; "his lost book"; "lost opportunities"

spiritually or physically doomed or destroyed; "lost souls"; "a lost generation"; "a lost ship"; "the lost platoon"

not gained or won; "a lost battle"; "a lost prize"

deeply absorbed in thought; "as distant and bemused as a professor listening to the prattling of his freshman class"; "lost in thought"; "a preoccupied frown"

no longer known; irretrievable; "a forgotten art"; "a lost art"; "lost civilizations"

no longer in your possession or control; unable to be found or recovered; "a lost child"; "lost friends"; "his lost book"; "lost opportunities"

spiritually or physically doomed or destroyed; "lost souls"; "a lost generation"; "a lost ship"; "the lost platoon"

not gained or won; "a lost battle"; "a lost prize"

Parted with unwillingly or unintentionally; not to be found; missing; as, a lost book or sheep.

Parted with; no longer held or possessed; as, a lost limb; lost honor.

Not employed or enjoyed; thrown away; employed ineffectually; wasted; squandered; as, a lost day; a lost opportunity or benefit.

Having wandered from, or unable to find, the way; bewildered; perplexed; as, a child lost in the woods; a stranger lost in London.

Ruined or destroyed, either physically or morally; past help or hope; as, a ship lost at sea; a woman lost to virtue; a lost soul.

Hardened beyond sensibility or recovery; alienated; insensible; as, lost to shame; lost to all sense of honor.

Not perceptible to the senses; no longer visible; as, an island lost in a fog; a person lost in a crowd.

Occupied with, or under the influence of, something, so as to be insensible of external things; as, to be lost in thought.

Parted with unwillingly or unintentionally; not to be found; missing; as, a lost book or sheep.

Parted with; no longer held or possessed; as, a lost limb; lost honor.

Not employed or enjoyed; thrown away; employed ineffectually; wasted; squandered; as, a lost day; a lost opportunity or benefit.

Having wandered from, or unable to find, the way; bewildered; perplexed; as, a child lost in the woods; a stranger lost in London.

Ruined or destroyed, either physically or morally; past help or hope; as, a ship lost at sea; a woman lost to virtue; a lost soul.

Hardened beyond sensibility or recovery; alienated; insensible; as, lost to shame; lost to all sense of honor.

Not perceptible to the senses; no longer visible; as, an island lost in a fog; a person lost in a crowd.

Occupied with, or under the influence of, something, so as to be insensible of external things; as, to be lost in thought.

Missing; given up; not won; destroyed; perplexed; wasted.

Parted with: no longer possessed: missing: thrown away: squandered: ruined.

Parted with; forfeited; missing; wasted; ruined.

Of LOSE, v.

Not to be found or recovered; not gained, used, or enjoyed; missed; wasted.

Ruined; also, bewildered; perplexed.