ameliorating,ppl.a.|əˈmiːlɪəˈreɪtɪŋ| [f. as prec. + -ing2.] Improving, making better. 1767A. Young Farmer's Lett. 112 Sow oats after a fallow or some ameliorating crop.1864Gladstone in Daily Tel. 12 Oct., Any man who proposes an ameliorating law becomes..a sort of object of suspicion.