7-Letter Words Matching ___KU__

There are 15 7-letter words that match ___KU__. 9 are common words, such as BACKUPS and BUNKUMS. A rarer one is WALKUPS. In this set, S is the most frequent open letter (15 words). 2 words contain a doubled letter.

Full list 15

backupsbunkumshookupslinkupslockupsmarkupsmockupspickupsworkupscockupsdinkumsfuckupskickupslookupswalkups

About this list

Words
15 (9 common words)
Common example
backups
Rare example
walkups
Doubled letters
2
Ending in S
15
Most frequent letter
S (15)

Questions

How many 7-letter words matching ___ku__ are there?

15. 9 of them are common words.

What is a common example?

BACKUPS is among the common words in this set.