Optativo
Facultativo
Potestativo
There are none.
Some examples of Spanish words that end in "ir" are dormir (to sleep), abrir (to open), and vivir (to live).
flaco
There aren't any Spanish words that end in K. K is not used in Spanish writing, except in a very few loan words from English and other foreign languages.
jugo (juice)
Libertad and dificultad
yes
superávit
In Spanish, "el" is the masculine definite article used before masculine singular nouns, while "la" is the feminine definite article used before feminine singular nouns. These articles are used to indicate the gender of the noun.
"nadie sabe"
EnglishSpanishracketraquetaradiatorradiadorradicalradicalradioradiorationalracionalrealizerealizarrealityrealidadrecentrecientereciprocalrecíprocoreflectivereflexivoregionregiónregisterregistroregulationregulaciónrelativerelativo/areligionreligiónrepresentrepresentarresidenceresidenciarespondresponderretainretenerromanticromántico/aruinruina
Perhaps other Spanish words that end with -ar. cantar