Military Mission Failures

noun A singular form of the word 'lice', which refers to a small, wingless insect that infests the hair or skin of humans and animals.

verb To mess up or ruin something, to make a mistake or error that causes problems or failure.

• The new employee managed to louse up the presentation with incorrect data.
• I really hope I don't louse up my interview tomorrow.
• Don't worry, you won't louse it up. Just be yourself.
• His bad decisions really loused up the company's chances for success.