certeza

Certo (“certain; sure”) +‎ -eza, from Old Portuguese certo, from Latin certus (“certain, fixed”).

• (Paulista) IPA^(key): /seɾ.ˈte.za/, /seɾ.ˈte.zɐ/, /seɹ.ˈte.za/, /seɹ.ˈte.zɐ/
• (South Brazil) IPA^(key): /seɾ.ˈte.za/, /seɻ.ˈte.za/
• (Portugal) IPA^(key): /sɨɾ.ˈte.zɐ/

certeza f (plural certezas)

1. (uncountable) certainty (state of being certain)

   Synonym: convicção

   Tenho certeza que isso ocorrerá.

   I’m sure that this will happen.

   (literally, “I have certainty that this will happen.”)

2. something which is certain

   Morte e impostos são as únicas certezas da vida.

   Death and taxes are life’s only certainties.

• com certeza

• certo

certeza?

1. are you sure?

certeza

1. asserting that something is certainly true; for sure

• com certeza

• sei lá

cierto +‎ -eza.

• (Castilian) IPA^(key): /θerˈteθa/, [θerˈt̪eθa]
• (Latin America) IPA^(key): /serˈtesa/, [serˈt̪esa]

certeza f (plural certezas)

1. certainty

   Synonyms: certidumbre, certitud

Certeza is much more common than its synonyms.

• cierto

• “certeza” in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014.