misuse
1. mis.use \mish-'u:z, (')mis(h)-'yu:z\ vt [ME misusen, partly fr. mis- + usen to use; partly fr. MF ]mesuser to abuse, fr. OF, fr. mis- + user to use 1: to use incorrectly : MISAPPLY 2: ABUSE, MISTREAT 2. mis.use \mish-'u:s, (')mis(h)-'yu:s\ n : incorrect or improper use : MISAPPLICATION