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impinge on

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impinge (up)on someone or something

to affect or interfere with someone or something. (Upon is formal and less commonly used than on.) This will not impinge upon me at all. Will this matter impinge on my policies in any way?

See also: on

impinge on

or impinge upon

v.

1. To intrude or encroach upon something: I disagree with this new law because it impinges on my First Amendment rights.

2. To strike or collide with something: Sound waves impinge on the eardrum, causing it to vibrate.

See also: on