dis·o·bey (dĭs'ə-bā') v.
dis·o·beyed, dis·o·bey·ing, dis·o·beys
v.
intr. To refuse or fail to follow an order or rule. v.
tr. To refuse or fail to obey (an order or rule).
[Middle English disobeien, from Old French desobeir, from Vulgar Latin *disobedīre : Latin dis-, dis- + Latin oboedīre, to obey; see obey.] dis'o·bey'er n.
1393, from O.Fr. desobeir (13c.), reformed with dis- from L.L. inobedire, a back-formation from inobediens "not obeying," from L. in- "not" + prp. of obedire (see obey). First record of disobedience is c.1400.