I would suppose that it is either Señor, or something very similar to that. It actually is 'Senhor' but it's said the same way. Señor is spanish. Portuguese doesn't use ñ.
Senhor - Mister
"Mister" and "Mr." are English equivalents of the Portuguese word Sr. The masculine singular abbreviation stands for Senhor, whose literal translations also include "gentleman" and "Sir." The pronunciation will be "see-NYOR" in Cariocan Brazilian and in continental Portuguese.
Senhor
Senhor
The norwegian word for Mister, is Herr. Used in the same way. Mister Smith, Herr Smith. Use with capital H.
"Mr" in Spanish is "señor".
Stag is not a portuguese word.
KEE-fee is a Portuguese pronunciation of 'Keefe'. It isn't a word in Portuguese. A Portuguese speaker tends to apply Portuguese pronunciation rules to this non-Portuguese word.
The plural of Portuguese is Portuguese.
Mister
Dom
The word quickness in portuguese is velocidade or rapidez.