< Portuguese Grammar

adivinhar: to guess

to guess adivinhar
I guess eu adivinh o
you/he/she guess(es) você/ele/ela adivinh a
we guess nós adivinh amos
you all/they guess vocês/eles/elas adivinh am

In olde English “to divine” meant foresee, foreknow, anticipate, to know beforehand.
Complete conjugation.

Adivinha quanto custou. (Guess how much it cost.)

Nem consigo adivinhar. (I can't even guess.)