15-Letter Words Matching ______ST_______

There are 46 15-letter words that match ______ST_______. 12 are common words, such as ADMINISTRATIONS and MISCONSTRUCTION. A rarer one is TRANSISTORISING. In this set, I is the most frequent open letter (45 words). 6 words contain a doubled letter.

Full list 46

Common words

administrationsmisconstructionnonconstructiveprocrastinatingprocrastinationprocrastinatorsprognosticatingprognosticationprognosticatorstransistorizingunderestimatingunderestimation
administrationsmisconstructionnonconstructiveprocrastinatingprocrastinationprocrastinatorsprognosticatingprognosticationprognosticatorstransistorizingunderestimatingunderestimationancylostomiasisankylostomiasiscircumstantiateconsubstantiatedistrustfulnessindigestibilityirresistibilitymistrustfulnessprocrastinatoryprognosticatoryreinvestigationancylostomiasesankylostomiasesantihistaminicsclandestinenessclandestinitiescoinvestigatorsdefenestrationsdeindustrializeeverlastingnessheadmastershipsinterestingnessnonaristocraticnonconstructionoverabstractingpostmastershipsprognosticativereindustrializereinvestigatingreregistrationssemiabstractiontechnostructurethermostabilitytransistorising

About this list

Words
46 (12 common words)
Common example
administrations
Rare example
transistorising
Doubled letters
6
Ending in S
19
Most frequent letter
I (45)

Questions

How many 15-letter words matching ______st_______ are there?

46. 12 of them are common words.

What is a common example?

ADMINISTRATIONS is among the common words in this set.