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ali·​as ˈā-lē-əs How to pronounce alias (audio)
plural aliases
: an assumed or additional name that a person sometimes uses
a fugitive using several aliases
John Smith, who goes by the alias Richard Jones
He checked into the hotel using an alias. = He checked into the hotel under an alias.
"My [gaming] alias when I was 18 … was Princess Peach," she [Bella Hadid] says with glee …Alex Frank
sometimes, specifically : a pseudonym (such as a pen name or stage name) that is associated with a person's professional identity
wrote the novels under an alias
Donald Glover, also known under his rap alias Childish Gambino, is an actor, writer, director, comedian and musician. Mark Warren
Vin Diesel, born Mark Sinclair, took on the tougher-sounding moniker as a bouncer in New York; the alias stuck as he transitioned into acting. Mae Ross


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: otherwise called : otherwise known as
used to indicate an additional name that a person sometimes uses
John Smith alias Richard Jones
the outlaw William H. Bonney, Jr. alias "Billy the Kid"

Examples of alias in a Sentence

Noun a fugitive using several aliases a dressmaker whom everyone knows as “Bet,” her adopted alias in the dressmaking business that she named after Betsy Ross
Recent Examples on the Web
But his emails… As vice president, Joe Biden used email aliases and private email addresses to communicate with son Hunter Biden and Hunter's business associates hundreds of times, according to new records released by the House Ways & Means Committee. Fox News Staff, Fox News, 6 Dec. 2023 An influencer under the alias alicia_yourmortgagegal gave similar advice in another viral TikTok, calculating that homeowners could save $83,000, assuming a $300,000 home at a 6.5% mortgage rate. Sydney Lake, Fortune, 25 Oct. 2023 Walker imagined a series of aliases all named after old sitcom characters (Archibald Bunker, Felix Unger, Sam Malone). David Fear, Rolling Stone, 8 Nov. 2023 Zeitlin, who had been a Coach director since 2006, was then ousted because of allegations of past inappropriate behavior; in particular, one woman accused him of posing as a photographer under an alias in 2007 to lure her into a romantic relationship. Phil Wahba, Fortune, 13 Oct. 2023 An alias email address is an additional email address that can be used to receive emails in the same mailbox as the primary email address. Kurt Knutsson, Fox News, 29 Oct. 2023 Whether recording as Aphex Twin or under one of his less-famous aliases, James has a history of cherry picking sound effects from ’80s arcade cabinets and old-school computer games with his trademark ear for texture. Nina Corcoran, Pitchfork, 25 Oct. 2023 Yet his use of an alias had the appearance of a criminal luxury, to the extent that it could have been said to be a form of cheating. Rachel Cusk, Harper's Magazine, 10 Sep. 2023 Cofield and Rogers adopted aliases, like hip-hop m.c.s, incorporating the name of their crew. Charles Bethea, The New Yorker, 28 Aug. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'alias.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History



noun derivative of alias entry 2


Middle English, borrowed from Medieval Latin aliās (short for aliās dictus "at other times called"), going back to Latin, "at other times, in other cases, otherwise," from alius "other" + -ās, adverbial suffix (perhaps accusative plural ending, with noun vicēs "turns, times" understood) — more at else

First Known Use


1605, in the meaning defined above


15th century, in the meaning defined above

Time Traveler
The first known use of alias was in the 15th century

Dictionary Entries Near alias

Cite this Entry

“Alias.” Dictionary, Merriam-Webster, Accessed 10 Dec. 2023.

Kids Definition


1 of 2 adverb
: otherwise called : otherwise known as
John Doe alias Richard Roe


2 of 2 noun
: an assumed or additional name

Legal Definition


1 of 3 adverb
: otherwise called : also known as
John Thomas Nolan, alias Legs Diamond


2 of 3 noun
: an assumed or additional name


3 of 3 adjective
: issued after the original instrument has not produced any action
an alias tax warrant
an alias summons
compare pluries


Latin, otherwise, from alius other

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