IPA: /ɪnˈfɪnɪtli/
KK: /ɪnˈfɪnɪtli/
In a way that has no limits or end; endlessly or to an extremely large degree.
The possibilities for creativity are infinitely vast.
Infinitely → It is formed from "in-" (meaning not) and "finitus" (from Latin, meaning limited or finite) and the suffix "-ly" (meaning in a manner). The word "infinitely" means in a manner that is not limited or boundless.
Think of 'not limited' ('in-') and 'finite' ('finitus') to remember that 'infinitely' describes something that has no bounds.