From effect + -ful.
effectful (comparative more effectful, superlative most effectful)
- Synonym of effectual
- (computing) Implementing effects.
2015, Matthijs Vákár, “A Framework for Dependent Types and Effects”, in arXiv[1]:On the other hand, we hope it can contribute a small-step towards the ultimate goal of an elegant fully fledged language for certified effectful programming..