18 letter Words with the Lowest Letter Frequency Scores

#WordFrequency ScoreLetters (Alpha)Unique Letter CountRanking (Len)
241 pneumoencephalitis 11,750 acehilmnopstu 13 85
242 aerothermodynamics 11,760 acdehimnorsty 13 84
243 undersecretaryship 11,792 acdehinprstuy 13 83
244 antiproductiveness 11,798 acdeinoprstuv 13 82
245 incopresentability 11,828 abceilnoprsty 13 81
246 cathodoluminescent 11,834 acdehilmnostu 13 80
247 hydroelectrization 11,844 acdehilnortyz 13 79
248 polyesterification 11,982 acefilnoprsty 13 78
249 neuroleptanalgesic 11,999 acegilnoprstu 13 77
250 superestablishment 12,020 abehilmnprstu 13 76
251 nondemonstratively 12,031 adeilmnorstvy 13 75
252 ethmopresphenoidal 12,159 adehilmnoprst 13 74
253 organotherapeutics 12,178 aceghinoprstu 13 73
254 thyroepiglottidean 12,259 adeghilnoprty 13 72
255 overcharitableness 12,315 abcehilnorstv 13 71
256 hypergeneticalness 12,366 aceghilnprsty 13 70
257 hypercholesteremia 12,368 acehilmoprsty 13 69
258 australopithecinae 12,546 acehilnoprstu 13 68
259 hydroxybutyricacid 8,241 abcdhiortuxy 12 645
260 submicroscopically 8,368 abcilmoprsuy 12 644