This is the 5784th most frequent Japanese word.
にらむ
To glare, stare, or scrutinize intently; to suspect or keep an eye on.
Here, 'にらむ' (niramu) is used to mean 'to glare at someone with intensity,' often implying a feeling of disapproval or anger from the one doing the action.
彼は私をじっとにらんだ。
He stared fixedly at me.
In this sentence, 'にらむ' again implies a sharp, intense gaze, emphasizing confrontation or vigilance.
彼女は敵を鋭い目でにらんでいた。
She was glaring at her enemy with sharp eyes.
Here, 'にらむ' is used more figuratively to imply carefully scrutinizing or assessing a situation, highlighting its analytical usage.