FOUL is validvalid

offensive to the senses [adj FOULER, FOULEST] : FOULLY [adv], FOULNESS [n] / to make foul [v FOULED, FOULING, FOULS]

2,446 of 196,601 in NWL2023·also valid in CSW24

offensive to the senses [adj FOULER, FOULEST, FOULLY] / to make dirty [v -ED, -ING, -S]