bravado[noun]Synonyms: swagger, bluster, boastfulness, boasting, bombast, swashbuckling, vaunting 
 [TahlilGaran] English Synonym Dictionary ▲
 bra‧va‧do /brəˈvɑːdəʊ $ -doʊ/ 
 noun [uncountable][
Date: 1500-1600; 
Language: French; 
Origin: bravade and Old Spanish bravata, from Old Italian bravata, from brava;  ⇒ brave1]
 behaviour that is deliberately intended to make other people believe you are brave and confident: 
 youthful bravado
 youthful bravado  [TahlilGaran] Dictionary of Contemporary English ▲