IPA: //ʌnˈstɪntɪŋli//
KK: /ʌnˈstɪntɪŋli/
In a way that is generous and without limits; giving freely and abundantly.
She helped her friends unstintingly, always offering her time and support.
Unstintingly → It is formed from "un-" (meaning not) and "stint" (from Old French *estint*, meaning to limit or restrain) and the suffix "-ingly" (meaning in a manner). The word means to do something in a manner that is not limited or restrained, often referring to generosity or abundance.
Think of doing something 'without limits' ('un-' means not, and 'stint' means to limit) — that's why 'unstintingly' means to give or act generously.