yerba f. grass, weed.
yerboso, -a grassy, weed-grown.
yermo, -a waste, desert.
yermo m. wilderness, desert.
yerro m. mistake.
yerto, -a rigid, motionless, petrified.
yo pron. pers. I.
yugo m. yoke.
zafir m. sapphire.
zozobra f. worry, anguish, anxiety.