Proper

adequado

(fit, suitable)

apropriado

(fit, suitable)

apropriado

(following the established standards of behavior or manners)

certinho

(following the established standards of behavior or manners)

certo

(following the established standards of behavior or manners)

completo

(complete, thorough)

decente

(following the established standards of behavior or manners)

por completo

(informal: utter)

propriamente dito

(in the very strictest sense of the word)

próprio

(fit, suitable)

próprio

(grammar: designating a particular person, place or thing)

próprio

(belonging to oneself or itself, own)