fiel, faithful, true.

fiera, wild beast.

fiero, fierce, furious.

fiesta, festival, holiday, feast.

Fígaro, prop. noun (the pen-name of Mariano José de Larra, the author of El Castellano viejo).

figura, figure.

figurar (con), to represent (by); —se, to imagine, think.

figurilla, small figure.

fijamente, fixedly.

fijarse (en), to look (at), notice.