=numero= _m._ number
=nunca= never
=O=
=o= or; =o ... o= either ... or
=o=, =oh= _inter._ oh
=obedecer= to obey
=obedecio= _3 sing. pret. ind. of_ =obedecer=
=obligar= to oblige, compel
=obligo= _3 sing. pret. ind. of_ =obligar=
=obra= _f._ work
=obrero= _m._ workman
=obsequiar= to entertain, show attention; =obsequiar a porfia= to show rivalry in entertaining
=obsequiaron= _3 pl. pret. ind. of_ =obsequiar=
=observar= to observe
=observo= _3 sing. pret. ind. of_ =observar=
=obtener= to obtain
=ocasion= _f._ occasion, opportunity
=oculta= _3 sing. pres. ind. of_ =ocultar=
=ocultar= to hide, conceal
=ocurrido= _p. p. of_ =ocurrir=
=ocurrir= to happen, occur
=ochenta= eighty
=ocho= eight; =ocho dias= a week
=oficial= _m._ officer
=oficina= _f._ office
=oficio= _m._ work, trade, business
=ofrecer= to offer, promise
=ofrecieron= _3 pl. pret. ind._ =ofrecio= _3 sing. pret. ind._ =ofrezco= _1 sing. pres. ind. of_ =ofrecer=
=oir= to hear; =al oir= on hearing
=ojo= _m._ eye
=oleaje= _m._ surge, waves
=oler= (=a=) to smell (of)
=olvidado= _p. p._ =olvidando= _pres. p. of_ =olvidar=
=olvidar= to forget
=olvide= _1 and 3 sing. pres. subj. of_ =olvidar=; =no olvide Vd.= don"t forget; =olvido= _3 sing. pret. ind. of_ =olvidar=
=olla= _f._ pot, kettle
=ora ... ora= now ... now
=orden= _f._ order; =a las ordenes= under the command
=ordinario= ordinary; =de ordinario= usual
=oriente= _m._ East, orient
=orilla= _f._ bank, sh.o.r.e; =a orillas= on the sh.o.r.e
=oro= _m._ gold
=oscuro= dark; =a oscuras= in the dark
=oso= _m._ bear
=otono= _m._ autumn
=otro= other, another; =otra vez= again; =otro tanto= as much more
=oveja= _f._ sheep
=oyeron= _3 pl. pret. ind. of_ =oir=
=oyo= _3 sing. pret. ind. of_ =oir=; =oyo las dos= he heard two o"clock strike