失 - lose, error, fault

disappointed love; broken heart; unrequited love; being lovelorn

abasement; fall; forfeiture; sinking (in people's estimation)

to lose sight of; to miss

disappointment; despair; despondency; broken heart; adversity

to lose

absconding; disappearance

loss of eyesight; loss of sight; going blind; blindness

stall

disappearance; running away; going missing; absconding

discourtesy; impoliteness

disqualification; elimination; incapacity

my apologies; I'm sorry; excuse me