This is the 11633rd most frequent Korean word.
날로
"날로" means "raw" or "plainly" and can also mean "increasingly" depending on the context.
날로 is used here to mean 'easily' or 'without effort'.
그는 노력 없이 날로 성공하고 싶어 한다.
He wants to succeed easily without effort.
날로 refers to 'raw' in this context.
날로 먹으면 건강에 좋다고 들었어요.
I heard that eating it raw is good for your health.
날로 is used to mean 'day by day' here.