15 letter Words with the Lowest Letter Frequency Scores
| # | Word | Frequency Score | Letters (Alpha) | Unique Letter Count | Ranking (Len) |
| 1921 |
subsequentially |
8,551 |
abeilnqstuy |
11 |
3,315 |
| 1922 |
hyperalkalinity |
8,556 |
aehiklnprty |
11 |
3,314 |
| 1923 |
unsupplementary |
8,556 |
aelmnprstuy |
11 |
3,313 |
| 1924 |
tuberculiferous |
8,557 |
bcefilorstu |
11 |
3,312 |
| 1925 |
nonfrangibility |
8,561 |
abfgilnorty |
11 |
3,311 |
| 1926 |
unconjecturable |
8,561 |
abcejlnortu |
11 |
3,310 |
| 1927 |
suprasphanoidal |
8,562 |
adhilnoprsu |
11 |
3,309 |
| 1928 |
deorusumduction |
8,564 |
cdeimnorstu |
11 |
3,306 |
| 1929 |
phenylhydrazine |
8,564 |
adehilnpryz |
11 |
3,308 |
| 1930 |
multiplicatives |
8,564 |
aceilmpstuv |
11 |
3,307 |
| 1931 |
commercialising |
8,565 |
acegilmnors |
11 |
3,305 |
| 1932 |
marsipobranchii |
8,567 |
abchimnoprs |
11 |
3,304 |
| 1933 |
presubscription |
8,569 |
bceinoprstu |
11 |
3,303 |
| 1934 |
suboptimization |
8,571 |
abimnopstuz |
11 |
3,302 |
| 1935 |
unacceptability |
8,573 |
abceilnptuy |
11 |
3,301 |
| 1936 |
hyperinsulinism |
8,575 |
ehilmnprsuy |
11 |
3,300 |
| 1937 |
semipellucidity |
8,576 |
cdeilmpstuy |
11 |
3,299 |
| 1938 |
unappropriately |
8,577 |
aeilnoprtuy |
11 |
3,298 |
| 1939 |
prespecializing |
8,577 |
acegilnprsz |
11 |
3,297 |
| 1940 |
frontosquamosal |
8,579 |
aflmnoqrstu |
11 |
3,295 |