Eng: Substantial...

厚

Fat, Generous, Substantial, Thick

實

Actual, Fact, Honest, Real, Solid, Substantial, True

充實

Enrich, Fulfill, Make meaningful, Substantial, Substantiate

充裕

Abundant, Ample, Plentiful, Rich, Substantial

實惠

Substantial

大幅

Significant, Significantly, Substantial, Substantially