Incompetence(noun)
The lack of skill or ability to do your job or a task as it should be done.;
Hindi meaning:अक्षमता
Synonyms: Inability, Inadequacy, Incapacity, Incapability
Antonyms: Ability, Capability, Efficiency, Endowment
Example: Because of his incompetence, we won't make our deadline.
Trick to remember: Competition me tum competence ho. 
