Wiktionary
unheedful
a. Not pay attention
Usage examples of "unheedful".
Aidates, unheedful of the merry laughter-loving group of students and under-graduates, who, lounging under the vaulted gateway, were amusing themselves at my expense in quizzing a freshman in the act of lionising.
He went about his work, unheedful of the jests of Troke, ungalled by his irons, unmindful of the groans and laughter about him.