un·​paired | \ ˌən-ˈperd How to pronounce unpaired (audio) \

Definition of unpaired

: not paired: such as
a : not matched or mated
b : being an electron that does not share its orbital with another electron

Keep scrolling for more

Synonyms & Antonyms for unpaired



Visit the Thesaurus for More 

Examples of unpaired in a Sentence

found an unpaired shoe in the back of the closet
Recent Examples on the Web Hillis’s slim handbook aimed to convince her reader that, with a stiff upper lip and a healthy dose of economic self-indulgence, being an unpaired woman could be not just tolerable but liberating. Ashley Fetters, Curbed, "Living alone and liking it," 20 June 2018 The final cells were large eggs with 23 unpaired chromosomes, ready to fuse with a sperm cell containing a complementary set. Marissa Fessenden, Smithsonian, "Researchers Mature Human Eggs in the Lab for the First Time," 10 Feb. 2018 When they are mixed, the two strands pair up, which leaves a large section in the center of the long strand unpaired. Chris Lee, Ars Technica, "Is that water drinkable? Fast test may hold the answer," 11 Oct. 2017 The sequence of the unpaired strand just happens to match a portion of E. coli's DNA. Chris Lee, Ars Technica, "Is that water drinkable? Fast test may hold the answer," 11 Oct. 2017 Unpaired males will attempt to force copulation during the egg-laying season. Michael Forsberg, National Geographic, "Why It Matters Who Females Choose to Have Sex With," 18 June 2017 But, as the nest-building and egg-laying season approaches, unpaired males start causing trouble. Richard O. Prum, The New Yorker, "Duck Sex and the Patriarchy," 17 May 2017 Light hitting the proteins produces a pair of free radicals, highly reactive molecules with unpaired electrons. Laura Sanders, WIRED, "Birds Use Light, Not Magnetic Field, to Migrate," 28 Oct. 2009

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unpaired.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of unpaired

1598, in the meaning defined above

Keep scrolling for more

Learn More about unpaired

Time Traveler for unpaired

Time Traveler

The first known use of unpaired was in 1598

See more words from the same year

Statistics for unpaired

Cite this Entry

“Unpaired.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/unpaired. Accessed 23 January 2020.

Keep scrolling for more

More Definitions for unpaired


un·​paired | \ ˌən-ˈpa(ə)rd, -ˈpe(ə)rd How to pronounce unpaired (audio) \

Medical Definition of unpaired

1a : not paired especially : not matched or mated
b : characterized by the absence of pairing electrons in the unpaired state
2 : situated in the median plane of the body an unpaired anatomical part also : not matched by a corresponding part on the opposite side

More from Merriam-Webster on unpaired

Thesaurus: All synonyms and antonyms for unpaired

Rhyming Dictionary: Words that rhyme with unpaired

Comments on unpaired

What made you want to look up unpaired? Please tell us where you read or heard it (including the quote, if possible).


out of the ordinary or unreasonable

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!