ab irato

ab irato From an angry man. Any action taken ab irato is to be understood as arising from anger rather than reason, and responses to such actions should be weighed carefully by reasonable people.
Found on http://www.wordinfo.info/words/index/info/view_unit/2357/2

Ab Irato

Civil Law. Lat. phrase which signifies by a man in anger. It is applied to bequests or gifts, which a man makes adverse to the interest of his heir, in consequence of anger or hatred against him. Thus a devise made under these circumstances is called a testament ab irato. And the suit which the heirs institute to annul this will is called an action...
Found on http://www.lectlaw.com/def/a120.htm
No exact match found