11-Letter Words Containing HTH

There are 17 11-letter words that contain HTH. 6 are common words, such as DIPHTHERIAS and ICHTHYOLOGY. A rarer one is TRIPHTHONGS. 1 words contain a doubled letter.

Full list 17

diphtheriasichthyologyknighthoodslightheadedlighthousesnaphthaleneapophthegmsdiphtherialdiphthongalichthyoliteichthyornisichthyosaurmonophthongophthalmiasautochthonsdiphtheroidtriphthongs

About this list

Words
17 (6 common words)
Common example
diphtherias
Rare example
triphthongs
Doubled letters
1
Ending in S
8

Questions

How many 11-letter words containing hth are there?

17. 6 of them are common words.

What is a common example?

DIPHTHERIAS is among the common words in this set.