solo
adjetivo
1 (sin compañía) alone; on one's own
pasa los días solo en su cuarto he spends the days alone o on his own in his room; iré solo I'll go alone o on my own; dejar solo a algn to leave sb alone; me quedé solo I was left alone; habla solo he talks to himself; se quedó solo a los siete años he was left an orphan o alone in the world at seven
estar más solo que la una to be all on one's own
es tonto como él solo he's as stupid as they come
lo hace como él solo he does it as no one else can
se queda solo contando mentiras he's as good a liar as you'll find
más vale estar solo que mal acompañado it's better to be on your own than in bad company
3 (único)
su sola preocupación es ganar dinero his one o only concern is to make money; con esta sola condición on this one condition; hay una sola dificultad there is only o just one problem; no hubo ni una sola objeción there was not a single objection