Alias/ˈeɪliəs/ Definition 1 of 4Pro Tip 1/3Concealing Identity Used when someone wants to conceal their real identity, often for privacy or secrecy. The author writes under an alias to avoid public attention. Pro Tip 2/3Not Always Criminal An alias can have legitimate uses, instead of being used for deceptive purposes. She published her novels under an alias due to societal pressures. Pro Tip 3/3Cultural Significance Aliases may be rooted in cultural practices or traditions, beyond just hiding one's identity. He adopted an alias that honored his heritage.