13 letter Words with the Lowest Letter Frequency Scores
            
            
            
                                
                    | # | Word | Frequency Score | Letters (Alpha) | Unique Letter Count | Ranking (Len) | 
|---|
                                        
                                                | 10761 | unblamability | 6,545 | abilmntuy | 9 | 16,671 | 
                                        
                                                | 10762 | glyphographer | 6,549 | aeghlopry | 9 | 16,670 | 
                                        
                                                | 10763 | tachyphylaxia | 6,551 | achilptxy | 9 | 16,669 | 
                                        
                                                | 10764 | amphipodiform | 6,552 | adfhimopr | 9 | 16,667 | 
                                        
                                                | 10765 | unlibellously | 6,552 | beilnosuy | 9 | 16,668 | 
                                        
                                                | 10766 | knuckleballer | 6,553 | abceklnru | 9 | 16,666 | 
                                        
                                                | 10767 | unflauntingly | 6,554 | afgilntuy | 9 | 16,665 | 
                                        
                                                | 10768 | quinquagenary | 6,561 | aeginqruy | 9 | 16,664 | 
                                        
                                                | 10769 | preculturally | 6,562 | acelprtuy | 9 | 16,663 | 
                                        
                                                | 10770 | progymnosperm | 6,565 | egmnoprsy | 9 | 16,662 | 
                                        
                                                | 10771 | morphographic | 6,566 | acghimopr | 9 | 16,661 | 
                                        
                                                | 10772 | silvicultural | 6,566 | acilrstuv | 9 | 16,660 | 
                                        
                                                | 10773 | brachychronic | 6,567 | abchinory | 9 | 16,659 | 
                                        
                                                | 10774 | unaccountably | 6,568 | abclnotuy | 9 | 16,658 | 
                                        
                                                | 10775 | unmellifluous | 6,573 | efilmnosu | 9 | 16,657 | 
                                        
                                                | 10776 | campylotropal | 6,575 | aclmoprty | 9 | 16,656 | 
                                        
                                                | 10777 | columelliform | 6,576 | cefilmoru | 9 | 16,655 | 
                                        
                                                | 10778 | circuminsular | 6,578 | acilmnrsu | 9 | 16,653 | 
                                        
                                                | 10779 | crystallology | 6,578 | acglorsty | 9 | 16,654 | 
                                        
                                                | 10780 | homologically | 6,579 | acghilmoy | 9 | 16,652 |