Only

filho único

(without sibling)

melhor

(singularly superior; the best)

único

(alone in a category)

único

(singularly superior; the best)

apenas

(without others or anything further; exclusively)

apenas

(no more than)

apenas

(as recently as)

somente

(without others or anything further; exclusively)

somente

(no more than)

somente

(as recently as)

exceto que

(except)

mas

(but)

mas

(however)

porém

(but)

porém

(however)

salvo que

(except)

só que

(but)

todavia

(but)

todavia

(however)