べつにいがみあっている敵同士ではあるまいし。
Sentence Analyzer
English Translation
        It's not as though we were enemies at each other's throat.
    
Furigana
        べつにいがみあっている敵同士 ではあるまいし。
    
Romanji
        Betsuni igamiatteiru katakidōshi de wa aru mai shi.
    
Words
            
                別に
            
            
                (べつに)
            
        
        
            (not) particularly; nothing; separately; apart
        
    
            
                啀み合う
            
            
                (いがみあう)
            
        
        
            to snarl; to quarrel
        
    
            
                仇同士
            
            
                (かたきどうし、てきどうし)
            
        
        
            mutual enemies
        
    
            
                で
            
            
                (で、にて)
            
        
        
            indicates location of action; at; in; indicates time of action; indicates means of action; cause of effect; by; and then; so; indicates continuing action; indicates certainty, emphasis, etc.
        
    
            
                は
            
            
                (は)
            
        
        
            topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
        
    
            
                或
            
            
                (ある)
            
        
        
            a certain ...; some ...
        
    
            
                まい
            
            
                (まい)
            
        
        
            probably isn't (doesn't, won't, etc.); don't (doesn't) intend to; intend not to; must not; (when used in an imperative sentence) don't
        
    
            
                し
            
            
                (し)
            
        
        
            (at the end of a phrase) notes one (of several) reasons