To become impatient or irritated; to fret or be agitated, especially when things do not proceed as expected.
返事が来なくてだんだん焦れてきた。
No reply came, and I gradually became impatient.
試験の結果発表を前にして、友人は焦れて落ち着かない様子だった。
Before the exam results were announced, my friend was restless with impatience.
長い渋滞で運転手が焦れてクラクションを鳴らした。
The driver grew impatient in the long traffic jam and honked the horn.