adverb, takes genitive case の
- really, truly, entirely, completely, wholly, perfectly. 
- indeed. 
interjection
 Usually written with kana alone.- good grief. 
 
            
         
        
            
                                    Variations
                    
                        
                            | Pronunciation | Kanji | Kana | Is Common | 
                                            
                            |  | 全く | まったく | ✔ | 
                                        
                             
            
                                    Contained Kanji Breakdown
                                                                        whole, entire, all
ゼン すべ.て まった.く (3rd, N3)
king, rule, magnate
オウ -ノウ おお (1st, N3)