12-Letter Words Containing HTH

There are 15 12-letter words that contain HTH. 2 are common words, such as LIGHTHEARTED and NAPHTHALENES. A rarer one is TRIPHTHONGAL. In this set, O is the most frequent open letter (12 words). 0 words contain a doubled letter.

Full list 15

lightheartednaphthalenesautochthonesdiphtheriticdiphthongizeexophthalmosichthyologicichthyosaursmonophthongsophthalmitisdiphtheroidsexophthalmicexophthalmusichthyofaunatriphthongal

About this list

Words
15 (2 common words)
Common example
lighthearted
Rare example
triphthongal
Doubled letters
0
Ending in S
8
Most frequent letter
O (12)

Questions

How many 12-letter words containing hth are there?

15. 2 of them are common words.

What is a common example?

LIGHTHEARTED is among the common words in this set.