Incorrigible

Incorrigible
Adjective

Def: Impossible to correct, control or discipline
Difficult to correct/ impossible

Tim had forgotten that his paper was due his next class period, so he wrote one during passing period. He turned the paper into Mr. Lathrop and hoped for a good grade, but what he got back wasn't what he wanted. His paper was incorrigible that Mr. Lathrop couldn't even correct it.