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Synonyms

alias

American  
[ey-lee-uhs] / ˈeɪ li əs /

noun

aliases plural
  1. a false name used to conceal one's identity; an assumed name.

    The police files indicate that “Smith” is an alias for Simpson.

    Synonyms:
    pseudonym, nom de plume, nom de guerre

adverb

  1. at another time; in another place; in other circumstances; otherwise: “Simpson alias Smith” means that Simpson in other circumstances has called himself Smith.

alias British  
/ ˈeɪlɪəs /

adverb

  1. at another time or place known as or named

    Dylan, alias Zimmerman

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an assumed name

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of alias

First recorded in 1525–35; from Latin: “at another time, otherwise”; see also else

Explanation

Your alias could be as important as the name you use when you’re on the run or as simple as your screen name on a social networking site. Either way, an alias is a temporary name, one you don’t use all the time or for every occasion. If you crash your parents' lovingly-restored sports car into the garage when you aren't even supposed to be driving it, it might be easier to skip town and live under an assumed name, or alias, than deal with their reaction. Alias can also be used as an adverb to mean "also known as." Your parents might be less than thrilled when you introduce your new boyfriend, "John Smith, alias Lock-Jaw Johnnie, wanted in 39 states."

Keep Reading on Vocabulary.com

Vocabulary lists containing alias

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Prosecutors alleged that Rogers dealt with a Chinese handler who, under the alias Hummin Lee, posed as an academic when he introduced himself at a conference in 2013.

From The Wall Street Journal Jul. 15, 2026

Authorities allege Chen also submitted marriage applications using an alias, “Vicky Liang.”

From Los Angeles Times Jul. 13, 2026

Adolfo Macías, also known by the alias "Fito", is awaiting trial in the United States following his extradition from Ecuador last year.

From BBC Jul. 13, 2026

The alias has been used by a number of different characters over the years, but they all usually possess shape-shifting abilities due to their clay-like bodies.

From Los Angeles Times Apr. 22, 2026

Turning to the crowd of spectators, he said, lifting my hand high up, “This here is Muhammad Ali, alias Cassius Clay.”

From "Kaffir Boy: An Autobiography" by Mark Mathabane

They had checked into the hotel using authentic Lebanese passports under aliases.

From The Wall Street Journal Jun. 24, 2026

Said, 48 years old, holds two British passports, one that expired this month and a second expiring in 2029, and has used several aliases, according to the U.S.

From The Wall Street Journal Mar. 30, 2026

Despite being thrown off Discord several times for violating the site's code of conduct, he returned with different aliases, 16 in total.

From BBC Mar. 25, 2026

Gaffield used the aliases “Nomad” and “Cedar,” authorities said.

From Los Angeles Times Dec. 24, 2025

I looked at my parents' aliases and their birthdays, which variants I knew.

From "The Woman Warrior" by Maxine Hong Kingston

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