lost

no longer in your possession or control; unable to be found or recovered

• “a lost child”
• “lost friends”
• “his lost book”
• “lost opportunities”

having lost your bearings; confused as to time or place or personal identity

• “I frequently find myself disoriented when I come up out of the subway”
• “the anesthetic left her completely disoriented”

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”

incapable of being recovered or regained

• “his lost honor”

not caught with the senses or the mind

• “words lost in the din”

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”

perplexed by many conflicting situations or statements; filled with bewilderment

• “obviously bemused by his questions”
• “bewildered and confused”
• “a cloudy and confounded philosopher”
• “just a mixed-up kid”
• “she felt lost on the first day of school”

unable to function; without help

people who are destined to die soon

• “the agony of the doomed was in his voice”