\ ˈpir How to pronounce peer (audio) \

Definition of peer

 (Entry 1 of 3)

1 : one that is of equal standing with another : equal The band mates welcomed the new member as a peer. especially : one belonging to the same societal group especially based on age, grade, or status teenagers spending time with their peers
2a : a member of one of the five ranks (duke, marquess, earl, viscount, or baron) of the British peerage
b : noble sense 1 Peers and commoners alike were shown the same courtesy.
3 archaic : companion


verb (1)
peered; peering; peers

Definition of peer (Entry 2 of 3)

intransitive verb

1 : to look narrowly or curiously a child peering from behind a tree especially : to look searchingly at something difficult to discern She peered into the dark closet looking for her missing shoe.
2 : to come slightly into view : emerge partly a vast white cloud, through which the sun peered— Francis Kingdon-Ward


verb (2)
peered; peering; peers

Definition of peer (Entry 3 of 3)

Keep scrolling for more

Other Words from peer


peer adjective

Synonyms for peer

Synonyms: Noun

Visit the Thesaurus for More 

Examples of peer in a Sentence

Noun He was respected and admired by his peers. teenagers spending time with their peer groups
Recent Examples on the Web: Noun The results were published report last week in the Lancet's preprint server, so the findings have not yet been externally peer-reviewed. Theresa Machemer, Smithsonian Magazine, "New Malaria Vaccine Trial Reports 77 Percent Efficacy Rate," 27 Apr. 2021 Two studies highlighting the results were posted Friday as pre-prints and have not been peer-reviewed. Angela Dewan, CNN, "We knew Covid-19 vaccines worked. Now we know more.," 23 Apr. 2021 The results are based on laboratory experiments with blood samples from small numbers of vaccinated people and have not yet been peer-reviewed. Apoorva Mandavilli, New York Times, "Vaccines Are Effective Against the New York Variant, Studies Find," 22 Apr. 2021 The findings, which have not been peer-reviewed, add to a growing list of ways the pandemic has disproportionately impacted women and upended decades of progress for women in the workforce. Kate Smith, CBS News, "Women experience higher levels of "Zoom fatigue" than men, study finds," 21 Apr. 2021 The research, which was published on SSRN and has not yet been peer-reviewed, is based on surveys of nearly 10,600 people about their experiences of Zoom meetings. Sarah Todd, Quartz, "The reason “Zoom fatigue” hits women harder than men," 16 Apr. 2021 The study hasn’t yet been peer-reviewed, although its findings are broadly consistent with the experience of cities such as Ferguson, Mo., and Baltimore. Rich Lowry, National Review, "A Police-Involved Shooting Sparks an Instant Riot: The New Normal Response," 13 Apr. 2021 The data, released over the weekend, has not been peer-reviewed but says that Sinovac’s vaccine is 50.34% effective in preventing symptomatic COVID-19 infections. Grady Mcgregor, Fortune, "Can you mix COVID-19 vaccine doses to boost immunity? China wants to find out," 12 Apr. 2021 Another study published last month, which has yet to be peer-reviewed, led by Rebecca Powell, an immunologist at the Icahn School of Medicine at Mount Sinai, found similar results. Maria Pasquini,, "Studies Show Vaccinated Moms Can Pass COVID Antibodies to Babies Through Breast Milk," 9 Apr. 2021 Recent Examples on the Web: Verb The 2,000-square-foot lab at Rush includes about 20 different scientific instruments that aid in a complicated, multistep process designed to peer into the genetic code of these tiny organisms. Angie Leventis Lourgos,, "Inside Rush’s new advanced molecular lab, where scientists are tracking and tracing COVID-19 variants," 21 Apr. 2021 Topping it off is Princess Alexandra Marine Park just offshore, where snorkelers can peer in on the underwater world. Anne Olivia Bauso, Travel + Leisure, "25 Most Beautiful Beaches in the World," 12 Apr. 2021 Most people don’t want to peer out their kitchen window into their neighbor’s home. Mary Grace Granados, Dallas News, "This five-bedroom house on Dallas’ Park Lane offers privacy with an indoor-outdoor living experience," 9 Apr. 2021 Scattered among the geometric patterns (zigzags, chevrons, herringbones) are eight human faces, each with slashes for eyes that peer not so benignly from the front and back planes. New York Times, "How the World’s Oldest Wooden Sculpture Is Reshaping Prehistory," 22 Mar. 2021 The woman lay on her back on the floor, placed the laptop on her abdomen and propped her head up on pillows to peer at the screen., "Long-term remote work is sending many of us from the home office to the physical therapy clinic," 15 Apr. 2021 Researchers first placed the remains in a computerized tomography scanner, which has been used in the past to peer beneath mummy bandages. Colin Barras, Science | AAAS, "Atom smasher unearths surprises hidden with 2000-year-old mummy," 24 Nov. 2020 Antibodies in the blood, which could take days to emerge, pursued invaders outside the body’s cells, while T cells used MHC to peer inside those cells, destroying the ones that had been infected by viruses or corrupted by cancer. James Somers, The New Yorker, "How the Coronavirus Hacks the Immune System," 2 Nov. 2020 To peer into this tiny world, Scheuring's team uses high-speed atomic force microscopy, which works like an old record player. Scientific American, "Shake, Rattle and React: Proteins Dance across a Membrane," 8 July 2012

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'peer.' 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 peer


13th century, in the meaning defined at sense 1

Verb (1)

1580, in the meaning defined at sense 1

Verb (2)

14th century, in the meaning defined above

History and Etymology for peer

Noun and Verb (2)

Middle English, from Anglo-French per, from per, adjective, equal, from Latin par

Verb (1)

perhaps by shortening & alteration from appear

Keep scrolling for more

Learn More about peer

Time Traveler for peer

Time Traveler

The first known use of peer was in the 13th century

See more words from the same century

Statistics for peer

Last Updated

6 May 2021

Cite this Entry

“Peer.” Dictionary, Merriam-Webster, Accessed 7 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for peer



English Language Learners Definition of peer

: a person who belongs to the same age group or social group as someone else
: a member of the British nobility


\ ˈpir How to pronounce peer (audio) \
peered; peering

Kids Definition of peer

 (Entry 1 of 2)

1 : to look curiously or carefully
2 : to come slightly into view : peep out



Kids Definition of peer (Entry 2 of 2)

1 : a person of the same rank or kind : equal
2 : a member of one of the five ranks (duke, marquis, earl, viscount, and baron) of the British nobility

Keep scrolling for more

More from Merriam-Webster on peer

Thesaurus: All synonyms and antonyms for peer

Nglish: Translation of peer for Spanish Speakers

Britannica English: Translation of peer for Arabic Speakers

Comments on peer

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


Test Your Vocabulary

Star Wars Words Quiz

  • cu jedi training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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