13-Letter Words Containing BST

There are 19 13-letter words that contain BST. 10 are common words, such as INSUBSTANTIAL and OBSTETRICIANS. A rarer one is SUBSTRUCTURAL. 4 words contain a doubled letter.

Full list 19

insubstantialobstetriciansobstructivelysubstantiallysubstantiatedsubstantiatessubstantivelysubstitutionssubstructuresunsubstantialsubstitutableabstractionaldisubstitutedobstetricallyobstinatenessoverabstractssubstancelesssubstantivizesubstructural

About this list

Words
19 (10 common words)
Common example
insubstantial
Rare example
substructural
Doubled letters
4
Ending in S
7

Questions

How many 13-letter words containing bst are there?

19. 10 of them are common words.

What is a common example?

INSUBSTANTIAL is among the common words in this set.