infatigable

An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. tireless
Catalina fue una luchadora infatigable por los derechos de la mujer.Catalina was a tireless campaigner for women's rights.
b. indefatigable
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
(formal)
Salvador se mostró infatigable en su búsqueda de la verdad.Salvador proved indefatigable in his search for the truth.
a. tireless
Fue gracias a los esfuerzos infatigables de mi difunta madre que ganamos este caso.It was thanks to the tireless efforts of my late mother that we won this case.
b. indefatigable
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
(formal)
Nuestro éxito actual se debe a la energía infatigable de nuestro fundador.We owe our success today to the indefatigable energy of our founder.
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