増強

N1 心強い kokorozuyoi heartening, reassuring N1 強いて shiite to dare, to insist N1 強いる shiiru to force, to compel, to coerce N1 強 kyou strong N1 強行 kyoukou forcing, enforcement N1 強硬 kyoukou firm, vigorous, stubborn N1 強制 kyousei obligation, compulsion, enforcement N1 強烈 kyouretsu strong, intense, severe N1 増進 zoushin promoting, increase, advance

N3 増 zou / ma.su, ma.shi, fu.eru, fu.yasu increase, add, augment N4 強 kyou, gou / tsuyo.i, tsuyo.maru, tsuyo.meru, shi.iru, kowa.i strong, fort, fuerte