look·​up | \ ˈlu̇k-ˌəp How to pronounce lookup (audio) \
variants: or look-up

Definition of lookup

 (Entry 1 of 2)

: an act, process, or instance of looking something up (as in a reference work or listing) dictionary lookups a price look-up

look up

looked up; looking up; looks up

Definition of look up (Entry 2 of 2)

intransitive verb

1 : to cheer up look up—things are not all bad
2 : to improve in prospects or conditions business is looking up

transitive verb

1 : to search for in or as if in a reference work look up an address
2 : to seek out especially for a brief visit look me up when you're here

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Examples of lookup in a Sentence

Verb be sure to look me up if you're ever in town by the next morning, the skies had begun to clear and we were looking up
Recent Examples on the Web: Noun Do not dive deep into an investigation; a casual lookup should have its limits. Christen A. Johnson, chicagotribune.com, "Go ahead and look up your kid’s teacher on social media — just tread carefully," 23 Aug. 2019 The Russian attack had focused on the public portions of Connecticut’s online system, such as its website, voter lookup system and online voter registration system. Christopher Keating, courant.com, "U.S. Senate report confirms Russian hackers targeted Connecticut," 26 July 2019 The Call Filter app can also be upgraded for $2.99 a month per line and adds a custom block list and reverse number lookup. Madeline Purdue, USA TODAY, "How T-Mobile, AT&T, Verizon and Sprint fight robocalls on their network," 8 July 2019 Soranet’s servers bounced around over the years, including to the US, according to domain lookups and Korean officials. Shawn Musgrave, The Verge, "How ICE used an obscure rule to pursue the owners of a Korean porn site," 27 Sep. 2018 Still, giving a single company power over your domain registration, certificates, authoritative DNS services, DNS lookups, and CDN delivery might just be a tad disconcerting to some. Sean Gallagher, Ars Technica, "Cloudflare gets into registrar business with wholesale domains and free privacy," 28 Sep. 2018 Hackers can retrieve the information by running a simple script that uses WiFi networks to determine location with Google’s geolocation lookup services. Mckenna Moore, Fortune, "How to Keep Google Home and Chromecast From Giving Hackers Your Location," 20 June 2018 How to check which vehicles have Takata air bags The NHTSA has an online lookup tool where drivers can enter a Vehicle Identification Number (VIN) to determine if any safety or recall issues affect your vehicle. CBS News, "Takata air bags recall expands to 3.3 million vehicles," 7 Jan. 2018 The online dictionary explains its word of the year sheds light on topics that spark the nation's interest as measured by a significant increase in lookups compared to past years. Editors, USA TODAY, "Southern spotlight: The U.S. Senate seat with national implications," 12 Dec. 2017 Recent Examples on the Web: Verb But things are looking up this week; Howard gets to face the Arizona Cardinals, the one NFL team that appears incapable of covering tight ends. Kevin Cusick, Twin Cities, "The Loop Fantasy Football Update Week 10: Last-minute moves," 10 Nov. 2019 This year, after such a strong start, fans are looking up the table rather than down it – believing that for Palace to be relegated this season would take some kind of catastrophe. SI.com, "5 Ways This Crystal Palace Season Could Turn Out (and How They'd Happen)," 6 Nov. 2019 Now, with Mars Music Hall downtown and likely an amphitheater at the MidCity development, things are looking up for music fans residing in the Huntsville area. Matt Wake | Mwake@al.com, al, "VBC announces new venue and restaurant names, lineup," 29 Oct. 2019 Nobody watching television is looking up the year you were born and getting hung up on it. Jason Scott, Billboard, "'Glee' at 10: Stars Look Back on the Culture-Shifting Show's Runaway Success," 3 Sep. 2019 With a franchise quarterback and an elite pass rusher in the fold, things were looking up. Jerry Mcdonald, The Mercury News, "Derek Carr nearly quit football for preacher’s life before rookie season with Raiders," 3 Sep. 2019 Whereas, now regulators are looking up at the organization and saying, ‘How did this happen? Max De Haldevang, Quartz, "Malaysia says Goldman Sachs bosses should face jail for the bank’s alleged role in a corruption scandal," 9 Aug. 2019 But London is looking up — the skyline is a forest of construction cranes. Carl Nolte, SFChronicle.com, "London, through the eyes of a San Franciscan," 27 July 2019 Now Things are looking up for the mystery-solving Draper, though. Rachel E. Greenspan, Time, "Woman Gets 1993 Postcard From Hong Kong Because Snail Mail Takes Time," 17 July 2019

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

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First Known Use of lookup


1948, in the meaning defined above


14th century, in the meaning defined at intransitive sense 1

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Statistics for lookup

Time Traveler for lookup

The first known use of lookup was in the 14th century

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Rhyming Dictionary: Words that rhyme with lookup

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