man ‧ ic /ˈmænɪk/ BrE AmE adjective
[ Date: 1900-2000 ; Origin: mania ]
1 . informal behaving in a very anxious or excited way:
She seemed slightly manic.
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