AnalyzerSentence analysis3SpansSentence自信満々に振る舞う1000 character limitAnalyzeSentence自じ信しん満まん々まんに振ふる舞まうSpan Details自じ信しん満まん々まんfull of confidence; brimming with self-confidencena-adjective, adverbにadverbial form after a na-adjectivegrammar振ふる舞まうbehave; conduct oneself; act; treat someone to food/drink; entertain-> 振舞うgodan verb