Idiom Definition:
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"to throw caution to the wind"  
    to  engage in a risky or uncharacteristic behavior when the outcome may not be known
     
Synonyms:
abrupt, ardent, eager, fervid, hasty, headlong, hurried, impulsive, precipitant, rash, rushing, spontaneous, spur, sudden swift, unplanned, unpremeditated, unthinking
 
 
   
The boy is literally
 throwing caution to the wind. - - - - ->  
