- 1to have a noticeable effect on something or someone, especially a bad one synonym encroach
- 2 He never allowed his work to impinge on his private life. The preparations for war were beginning to impinge.
NAmE//ɪmˈpɪndʒ//[intransitive]impinge (on/upon something/somebody)(formal)Verb Forms present simple I / you / we / they impinge
he / she / it impinges
past simple impinged
-ing form impinging