adverb, adverb taking the 'to' particle
glancing sharply; giving a sharp look
Describes a quick, sharp, or piercing glance, often with a sense of suspicion or scrutiny. Commonly used with と and verbs like 見る.
The clerk gave the suspicious customer a sharp look.
He gave me a sharp glance.
The teacher glared sharply at the late student.
The teacher glared sharply at the students who were messing around.
He shot a sharp sidelong glance at me.
Standard hiragana spelling for this mimetic adverb.
Katakana variant, often used for emphasis or in informal writing.
Mimetic word; the exact origin is uncertain, but it is likely sound-symbolic, imitating the quick, sharp nature of the glance.