 
<translate> Iwe ọkụ bụ àgwà mmadụ na-enwe mgbe a kpasuru ya iwe. A na-akpatakarị mgbakasị ahụ́ n'ihi ehighị ụra nke ọma. Insomnia pụtara enweghị ike ihi ụra. Ndị na-arịa ọrịa ehighị ụra nke ọma na-eteta n'etiti abalị. Ya mere, azịza ya bụ iwe ọkụ. <eng> Irritability is the quality of being irritable. Irritability is generally caused by insomnia. Insomnia means inability to sleep. People with insomnia awaken in the middle of the night. So, the answer is irritability. 