lose

fail to keep or to maintain; cease to have, either physically or in an abstract sense; "She lost her purse when she left it unattended on her seat"

fail to win; "We lost the battle but we won the war"

suffer the loss of a person through death or removal; "She lost her husband in the war"; "The couple that wanted to adopt the child lost her when the biological parents claimed her"

place (something) where one cannot find it again; "I misplaced my eyeglasses"

miss from one's possessions; lose sight of; "I've lost my glasses again!"

allow to go out of sight; "The detective lost the man he was shadowing after he had to stop at a red light"

fail to make money in a business; make a loss or fail to profit; "I lost thousands of dollars on that bad investment!"; "The company turned a loss after the first year"

fail to get or obtain; "I lost the opportunity to spend a year abroad"

retreat

fail to perceive or to catch with the senses or the mind; "I missed that remark"; "She missed his point"; "We lost part of what he said"

be set at a disadvantage; "This author really suffers in translation"