12-Letter Words Matching L_________S_

There are 22 12-letter words that match L_________S_. 7 are common words, such as LIFELESSNESS and LISTLESSNESS. A rarer one is LUBBERLINESS. In this set, E is the most frequent open letter (21 words). 21 words contain a doubled letter.

Full list 22

lifelessnesslistlessnessliterarinesslonesomenesslopsidednesslukewarmnesslusciousnesslaudablenessleatherinesslexicologistliverishnesslollapaloosalovesicknessluminousnesslustrousnesslandlessnesslifelikenessliteratenesslongsomenesslovelessnesslovelornnesslubberliness

About this list

Words
22 (7 common words)
Common example
lifelessness
Rare example
lubberliness
Doubled letters
21
Ending in S
20
Most frequent letter
E (21)

Questions

How many 12-letter words matching l_________s_ are there?

22. 7 of them are common words.

What is a common example?

LIFELESSNESS is among the common words in this set.