discourtesy; impoliteness; excuse me; goodbye; to leave; to be rude
loss (of assets, profit, etc.)
verbal gaffe; verbal slip; slip of the tongue; using improper words
forgetting; lapse of memory
accident (caused by negligence); error; blunder; fault; defect
disappointment; despair; despondency; broken heart; adversity
unemployment; losing one's job; becoming unemployed
loss of eyesight; loss of vision; going blind; blindness
advantages and disadvantages; plus and minuses
forgetting the words; inability to pronounce a word correctly
error made by the enemy or opposing team
apologies for tweeting to you without either of us following the other
apologies for tweeting to you without either of us following the other