The word "欲罢不能" is formed by the sequential combination of four characters: 欲 (want), 罢 (stop), 不 (not), and 能 (able). Literally, it means "want to stop but cannot", where the first two characters express the desire to cease, and the last two negate the ability to do so, creating a fixed phrase that denotes an irresistible compulsion to continue.