What is the meaning of Actuar?

to act

to act

to play

pre-reform spelling (used until 1943 in Brazil and 1990 in Portugal) of atuar; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling

actuary

registrar, actuary, clerk (in the Roman Empire)

to act, to behave

to act, to perform

to actuate

to litigate, to sue

Source: wiktionary.org