13 letter Words with the Lowest Letter Frequency Scores
| # | Word | Frequency Score | Letters (Alpha) | Unique Letter Count | Ranking (Len) |
| 1981 |
supplementary |
7,573 |
aelmnprstuy |
11 |
2,828 |
| 1982 |
manuscription |
7,574 |
acimnoprstu |
11 |
2,827 |
| 1983 |
isobenzofuran |
7,575 |
abefinorsuz |
11 |
2,826 |
| 1984 |
brachiopodist |
7,576 |
abcdhioprst |
11 |
2,825 |
| 1985 |
valedictorily |
7,577 |
acdeilortvy |
11 |
2,824 |
| 1986 |
conjecturable |
7,578 |
abcejlnortu |
11 |
2,822 |
| 1987 |
quasiparticle |
7,578 |
aceilpqrstu |
11 |
2,823 |
| 1988 |
purifications |
7,579 |
acfinoprstu |
11 |
2,818 |
| 1989 |
subepiglottal |
7,579 |
abegilopstu |
11 |
2,819 |
| 1990 |
unspecialized |
7,579 |
acdeilnpsuz |
11 |
2,821 |
| 1991 |
undiscomfited |
7,579 |
cdefimnostu |
11 |
2,820 |
| 1992 |
urbanologists |
7,580 |
abgilnorstu |
11 |
2,816 |
| 1993 |
chromatolysis |
7,580 |
achilmorsty |
11 |
2,817 |
| 1994 |
gynecomastism |
7,581 |
acegimnosty |
11 |
2,815 |
| 1995 |
lexicographer |
7,582 |
aceghiloprx |
11 |
2,812 |
| 1996 |
madrigalesque |
7,582 |
adegilmqrsu |
11 |
2,813 |
| 1997 |
inconformable |
7,582 |
abcefilmnor |
11 |
2,811 |
| 1998 |
nonscriptural |
7,582 |
acilnoprstu |
11 |
2,814 |
| 1999 |
ruggedization |
7,584 |
adeginortuz |
11 |
2,810 |
| 2000 |
apprehensibly |
7,586 |
abehilnprsy |
11 |
2,809 |