v. 25B6; verb
these issues impinge on all of us : AFFECT, have an effect, touch, influence, make an impact, leave a mark.
the proposed fencing would impinge on a public bridleway : ENCROACH, intrude, infringe, invade, trespass, obtrude, cut through, interfere with; violate; archaic entrench on.
(Physics) electrically charged particles impinge on the lunar surface : STRIKE, hit, collide with.