プログレッシブ和英中辞典(第4版)の解説
じろじろ（と）
じろじろ見る
stare ((at))
そんなにじろじろと人の顔を見るものではない
You must not stare 「people in the face [at people] like that.
彼らは訪問者をじろじろ見た
They scrutinized the visitor from head to toe.
いくら私の顔をじろじろ見たって何も書いてないよ
However intently you may study my face, you won't find anything written there.