impinge on/upon somebody/something phrasal verb formal ( see also ↑ impinge )
to have a harmful effect on someone or something:
Personal problems experienced by students may impinge on their work.
—impingement noun [uncountable and countable]
impinge on/upon somebody/something phrasal verb formal ( see also ↑ impinge )
to have a harmful effect on someone or something:
Personal problems experienced by students may impinge on their work.
—impingement noun [uncountable and countable]
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012