食い下がる
くいさがる
to grab the front of the opponent's mawashi, place one's head against their chest, and lower one's hips
けんつくを食わせる is read as けんつくをくわせる (kentsukuokuwaseru) and means to angrily reject.
けんつくをくわせる
kentsukuokuwaseru
くいさがる
to grab the front of the opponent's mawashi, place one's head against their chest, and lower one's hips