Only

hijo único

(without sibling)

irrepetible

(singularly superior; the best)

señero

(alone in a category)

singular

(singularly superior; the best)

unigénito

(without sibling)

único

(alone in a category)

único

(without sibling)

único

(singularly superior; the best)

apenas

(as recently as)

solamente

(without others or anything further; exclusively)

solamente

(no more than)

solo

(without others or anything further; exclusively)

solo

(no more than)

solo

(as recently as)

sólo

(without others or anything further; exclusively)

tan solo

(without others or anything further; exclusively)

únicamente

(without others or anything further; exclusively)

únicamente

(no more than)