man‧ic /ˈmænɪk/ 
 adjective[
Date: 1900-2000; 
Origin: mania]
1.  informal behaving in a very anxious or excited way: 
 She seemed slightly manic.
 She seemed slightly manic. Mortimer continued to shoot, a manic grin on his face.2.  medical
 Mortimer continued to shoot, a manic grin on his face.2.  medical relating to a feeling of great happiness or excitement that is part of a mental illness 
 [TahlilGaran] Dictionary of Contemporary English ▲