や否や（やいなや）
as soon as · expression · JLPT N1
Examples
着くや否や電話した。
As soon as I arrived, I called.
Practise the thinking. Keep the judgement.
Practise the thinking. Keep the judgement.
as soon as · expression · JLPT N1
着くや否や電話した。
As soon as I arrived, I called.