misusefuladj.
Origin: Formed within English, by derivation. Etymons: misuse n., -ful suffix.
Etymology: < misuse n. + -ful suffix, after useful adj.
1890 A. Lang xvi. 135 The wanton misuse, or rather the misuseful wantonness, of the Indian herb [sc. tobacco].
This entry has been updated (OED Third Edition, June 2002; most recently modified version published online March 2022).