Agree

aceptar

(to yield assent, to accede)

admitir

(to yield assent, to accede)

concordar

(to come to terms or to a common resolve)

concordar

(to resemble, coincide, correspond)

concordar

(grammar: to correspond in gender, number, case, person, etc.)

convir

(to come to terms or to a common resolve)

estar de acordo

(to be in harmony about an opinion; be in unison or concord; be united)