jugo (juice)
"Ir" is one of the three endings for Spanish verbs, the others being "ar" and "er".
Some Spanish words that end in "u" include "menú" (menu), "atún" (tuna), and "virtu" (virtue).
flaco
There are none.
Some examples of Spanish words that end in "ir" are dormir (to sleep), abrir (to open), and vivir (to live).
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.
Libertad and dificultad
yes
Optativo Facultativo Potestativo
superávit
In Spanish, the stress accent usually goes on the second-to-last syllable for words that end in a vowel other than -n, -s, or a vowel with an accent mark. So for words that end in -a or -o, the stress accent will fall on the penultimate syllable.
"nadie sabe"