固いこと言うなよ。
Sentence Analyzer
English Translation
        You don't have to be so formal.
    
Furigana
Romanji
        Katai koto iu na yo.
    
Words
            
                硬い
            
            
                (かたい)
            
        
        
            hard; solid; tough; stiff; tight; wooden; unpolished (e.g. writing); strong; firm (not viscous or easily moved); safe; steady; honest; steadfast; obstinate; stubborn; bookish; formal; stuffy
        
    
            
                事
            
            
                (こと、こん)
            
        
        
            thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as
        
    
            
                言う
            
            
                (いう、ゆう)
            
        
        
            to say; to utter; to declare; to name; to call; to go (e.g. "the alarm went ping"); to make a noise
        
    
            
                な
            
            
                (な)
            
        
        
            (sentence end, mainly masc.) indicates emotion or emphasis; (used with masu stem verb) command; (used with dictionary form verb) prohibition
        
    
            
                よ
            
            
                (よ)
            
        
        
            indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!