defiance or disregard of accepted standards of behavior.
rash or irresponsible policies, methods, or actions, especially in political or international affairs.
Origin of adventurism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
recklessness, esp in politics and finance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012