solitari-o, -a, solitary.

solit-o, -a, alone, solitary.

sol-o, -a, sole, alone, single, solitary; a solas, alone, privately.

sólo, adv., only.

soltar, to let loose, leave.

solución, f., solution.

sombra, f., shade, shadow, spectre.

sombrero, m., hat.

sombrí-o, -a, gloomy, morose.

someter, to subject.