What is the meaning of Não?

Alternative form of nãu

reintegrationist spelling of non

reintegrationist spelling of non (no)

not; do not; have not (negates the meaning of the verb or adverb)

used in sentences containing a negative pronoun as the object; see double negative

used to emphasise or reinforce (in the case that there is a previous unstressed adverb não, see above) sentences containing a negative pronoun as the subject or already containing não

isn't (used to ask whether a person agrees with the proposition, rather than to ask for an unknown fact)

non- (forms antonyms of adjectives)

isn't it? right? (tag question)

no (used to show disagreement or negation)

no (used to show agreement with a negative question)

no (a negative answer)

brain, cerebrum

sad, grieved

Source: wiktionary.org