12-Letter Words Matching _________F__

There are 30 12-letter words that match _________F__. 12 are common words, such as CHILDPROOFED and COUNTEROFFER. A rarer one is WATERPROOFER. In this set, E is the most frequent open letter (27 words). 14 words contain a doubled letter.

Full list 30

Common words

childproofedcounterofferdisregardfulflameproofedsoundproofedspendthriftsteaspoonsfultranspacificunderstaffedunscientificunsuccessfulwaterproofed
childproofedcounterofferdisregardfulflameproofedsoundproofedspendthriftsteaspoonsfultranspacificunderstaffedunscientificunsuccessfulwaterproofedcharacterfulheterograftsloosestrifesneedlecraftsoverfancifuloverpowerfuloverspecificpriestcraftsunremorsefulunrespectfulunthoughtfulbullmastiffsflameprooferforesightfulhasenpfeffermonospecificultracarefulwaterproofer

About this list

Words
30 (12 common words)
Common example
childproofed
Rare example
waterproofer
Doubled letters
14
Ending in S
6
Most frequent letter
E (27)

Questions

How many 12-letter words matching _________f__ are there?

30. 12 of them are common words.

What is a common example?

CHILDPROOFED is among the common words in this set.