13 letter Words with the Lowest Letter Frequency Scores
            
            
            
                                
                    | # | Word | Frequency Score | Letters (Alpha) | Unique Letter Count | Ranking (Len) | 
|---|
                                        
                                                | 12021 | schizotrichia | 7,646 | achiorstz | 9 | 15,410 | 
                                        
                                                | 12022 | spermatoplasm | 7,646 | aelmoprst | 9 | 15,412 | 
                                        
                                                | 12023 | epizootiology | 7,647 | egiloptyz | 9 | 15,409 | 
                                        
                                                | 12024 | coracohumeral | 7,647 | acehlmoru | 9 | 15,408 | 
                                        
                                                | 12025 | synchondrosis | 7,649 | cdhinorsy | 9 | 15,407 | 
                                        
                                                | 12026 | caricographer | 7,650 | aceghiopr | 9 | 15,405 | 
                                        
                                                | 12027 | peccatophobia | 7,650 | abcehiopt | 9 | 15,406 | 
                                        
                                                | 12028 | superprinting | 7,651 | eginprstu | 9 | 15,404 | 
                                        
                                                | 12029 | cytomicrosome | 7,652 | ceimorsty | 9 | 15,403 | 
                                        
                                                | 12030 | precorruptive | 7,653 | ceioprtuv | 9 | 15,402 | 
                                        
                                                | 12031 | fussification | 7,653 | acfinostu | 9 | 15,400 | 
                                        
                                                | 12032 | perityphlitic | 7,653 | cehilprty | 9 | 15,401 | 
                                        
                                                | 12033 | corolliferous | 7,654 | cefilorsu | 9 | 15,399 | 
                                        
                                                | 12034 | phosphatising | 7,654 | aghinopst | 9 | 15,398 | 
                                        
                                                | 12035 | infraturbinal | 7,655 | abfilnrtu | 9 | 15,396 | 
                                        
                                                | 12036 | demultiplexed | 7,655 | deilmptux | 9 | 15,395 | 
                                        
                                                | 12037 | nonpacifistic | 7,655 | acfinopst | 9 | 15,397 | 
                                        
                                                | 12038 | virgulariidae | 7,655 | adegilruv | 9 | 15,394 | 
                                        
                                                | 12039 | unpleasurable | 7,656 | abelnprsu | 9 | 15,393 | 
                                        
                                                | 12040 | geomorphogeny | 7,657 | eghmnopry | 9 | 15,391 |