じろっと

adverb

with a sharp glance; darting a look

Describes a quick, often sharp or suspicious sideways glance. Similar to じろり but with a slightly softer or more momentary feel.

See also: じろり

• 彼かれは私わたしをじろっと見みてから、何なにも言いわずに去さった。

  He gave me a sharp glance and then left without a word.