grim stare; stern look
Describes a severe, intimidating, or angry expression in the eyes. Often used when someone is glaring or looking harshly at another person.
He glared at me with a stern look.
Under my boss's grim stare, I couldn't say anything.
Compound of 険しい (けわしい, 'steep, severe, grim') and 目 (め, 'eye'). The expression literally means 'severe eyes' and is used to describe a harsh or intimidating gaze.