Related Clues:

• Hits the wrong elevator button, for example
• Takes eight tiles in Scrabble, e.g
• Needs auto-correct, say (unless auto-correct is itself wrong)
• Isn't tactful, say
• Is less than perfect
• CCs the wrong person, for example
• Misremembers, maybe
• Proves fallible
• Pours dish detergent in the washing machine, say
• Dumps pet food into the water bowl, say
• Scores an own goal, say
• Makes a wrong move
• Adjusts after force is checked
• Serves a vegan a whole milk latte, say
• Has things backward, say