Similar words
alcunha
apelido is the everyday common word for "nickname"; alcunha is more formal or literary, sometimes with a mocking or uncomplimentary connotation.
Similar in other languages
German
Spitzname
Spitzname is the German word for the same thing — both mean "nickname."
Spanish
apodo
apodo is the Spanish word for the same thing — both mean "nickname."
Spanish
mote
mote is the Spanish word for the same thing — both mean "nickname."
Practice
1 What does apelido mean?
nickname
2 Fill the gap: Meu ___ é Zé.
Full sentence: Meu apelido é Zé. (My nickname is Zé.)
3 Which fingerprint chart matches apelido?
apelido: neutral register, core frequency, general domain, neutral connotation.