9-Letter Words Matching ____LS___

There are 21 9-letter words that match ____LS___. 10 are common words, such as EXCELSIOR and EXPULSION. A rarer one is WHEELSMEN. 2 words contain a doubled letter.

Full list 21

excelsiorexpulsionimpulsingimpulsionimpulsiverepulsingrepulsionrepulsiverevulsionupholsterdemulsifydivulsionexpulsiverevulsivespoilsmanwheelsmanexpulsingrepulsersspoilsmentrailsidewheelsmen

About this list

Words
21 (10 common words)
Common example
excelsior
Rare example
wheelsmen
Doubled letters
2
Ending in S
1

Questions

How many 9-letter words matching ____ls___ are there?

21. 10 of them are common words.

What is a common example?

EXCELSIOR is among the common words in this set.