mix up

1 of 2

verb

mixed up; mixing up; mixes up
Synonyms of mix upnext

transitive verb

1
: to mistakenly think that (someone or something) is someone or something else : confuse
mixed the twins up
mixed up the times for the meetings
2
: to mistakenly put (something) in a place where something else should be
mixed up the two files
3
: to cause (someone) to be involved in a usually dangerous or improper activity
usually used as (be/get) mixed up in
got mixed up in an illegal scheme
4
: to cause (someone) to become involved with usually bad or dangerous people
1
: a state or instance of confusion
a mix-up in our hotel reservations
2
3

Examples of mix up in a Sentence

Noun there was a mix-up at the airport and our luggage was accidentally sent to Ohio
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Verb
And of course, the producers had to mix up some drama by having each designer call out another as the weakest competitor. Roxana Hadadi, Vulture, 7 Aug. 2026 Christina Aguilera was criticized over her performance at the start of Super Bowl XLV in 2011, which saw her mix up key lyrics during the tune. Joey Nolfi, Entertainment Weekly, 3 Aug. 2026
Noun
Cassandra Barksdale and her attorneys filed a lawsuit Tuesday against Kaiser Permanente alleging the mix-up led to the surgery and months of physical and emotional pain. Kim Chandler, Fortune, 8 Aug. 2026 In the following days, election officials ensured voters that the mix-ups did not compromise the results. Jenna Ebbers, Kansas City Star, 7 Aug. 2026 See All Example Sentences for mix up

Word History

First Known Use

Noun

1841, in the meaning defined at sense 1

Time Traveler
The first known use of mix up was in 1841

Browse Nearby Words

Cite this Entry

“Mix up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mix%20up. Accessed 13 Aug. 2026.

Kids Definition

mix-up

noun
ˈmik-ˌsəp
: an instance of confusion

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