Learn how to say Lunatically correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word lunatic:
a person who is mentally ill (not in technical use).
an extremely foolish or eccentric person:
this lunatic just accelerated out from the side of the road
mentally ill (not in technical use):
a ward of lunatic old ladies
extremely foolish or eccentric:
he would be asked to acquiesce in some lunatic scheme
Middle English: from Old French lunatique, from late Latin lunaticus, from Latin luna ‘moon’ (from the belief that changes of the moon caused intermittent insanity)