15-Letter Words Starting With TH

There are 26 15-letter words that start with TH. 5 are common words, such as THANKLESSNESSES and THEATRICALITIES. A rarer one is THYROIDECTOMIES. In this set, E is the most frequent open letter (24 words). 5 words contain a doubled letter.

Full list 26

Common words

thanklessnessestheatricalitiestherapeuticallythoughtlessnessthunderstrickenthermobarographthermobarometerthermochemistrythermodynamicalthromboembolismthromboplastinsthalassocracies
thanklessnessestheatricalitiestherapeuticallythoughtlessnessthunderstrickenthermobarographthermobarometerthermochemistrythermodynamicalthromboembolismthromboplastinsthalassocraciestheatricalizingthermalizationsthermojunctionsthermoperiodismthermoreceptorsthermoregulatedthermoregulatesthermoregulatorthermoremanencethermostabilitythinkablenessesthunderstrikingthyrocalcitoninthyroidectomies

About this list

Words
26 (5 common words)
Common example
thanklessnesses
Rare example
thyroidectomies
Doubled letters
5
Ending in S
11
Most frequent letter
E (24)

Questions

How many 15-letter words starting with th are there?

26. 5 of them are common words.

What is a common example?

THANKLESSNESSES is among the common words in this set.