endlessly
adv.happening for a very long time or repeating many times without stopping. You use this when something feels like it will never finish.
adv.in a manner that continues without a perceived or actual end; incessantly. Often used hyperbolically to describe repetitive or tedious actions.
“The children talked endlessly about their summer vacation.”
“The two scholars debated the meaning of the text endlessly, never reaching a final agreement.”
“In the desert, the golden dunes seemed to stretch out endlessly toward the horizon, offering no landmarks to guide the weary travelers.”
Typically follows the verb it modifies or appears at the end of the clause.
“Two American cousins pursue love while endlessly debating and taxonomizing it.”
“In the book Panettiere wrote about the troubling link she made between acting and love: “Directors, fans, and Mom praised me endlessly for my over-the-top dramatic responses.”
From Middle English endelesly, from Old English endelēaslīċe; equivalent to endless + -ly.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.