13-Letter Words Matching __X__________

There are 30 13-letter words that match __X__________. 10 are common words, such as ANXIOUSNESSES and DEXTEROUSNESS. A rarer one is VEXILLOLOGIES. In this set, O is the most frequent open letter (26 words). 11 words contain a doubled letter.

Full list 30

Common words

anxiousnessesdexterousnessjuxtapositionlexicographerlexicographicluxuriousnessmaximizationssexagenarianstoxicologicaltoxicologistsdexamethasonedextroglucose
anxiousnessesdexterousnessjuxtapositionlexicographerlexicographicluxuriousnessmaximizationssexagenarianstoxicologicaltoxicologistsdexamethasonedextroglucoselexicologistsnoxiousnessessexlessnessestaxonomicallytoxoplasmosisvexatiousnessvexillologisthexamethoniumhexobarbitalsmaxillofacialmyxomatosisessexdecillionssexploitationsextuplicatedsextuplicatessexualizationtoxoplasmosesvexillologies

About this list

Words
30 (10 common words)
Common example
anxiousnesses
Rare example
vexillologies
Doubled letters
11
Ending in S
17
Most frequent letter
O (26)

Questions

How many 13-letter words matching __x__________ are there?

30. 10 of them are common words.

What is a common example?

ANXIOUSNESSES is among the common words in this set.