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1. to lose in competition; to lose one's expected reward. Our team lost out because our quarterback broke his leg. I ran my best race, but I still lost out.
2. lose out (on something) Go to miss out (on something).
1. Fail to succeed, be defeated, as in The election's over, and you've lost out. [Mid-1800s]
2. Also, lose out on or in . Miss an opportunity to participate, as in We came so late that we lost out on our chance to see her dance, or The Republicans lost out in last fall's elections. [Colloquial; mid-1900s] Also see miss out on.
1. To fail to achieve or receive an expected gain: Your sister got here first, so I'm giving her the money—I guess you lose out. The town will lose out on a lot of tax revenue if the factory is shut down.
2. lose out to To be defeated or surpassed by someone or something; lose to someone or something: Local companies are losing out to foreign companies in the competition for government contracts.