12-Letter Words Matching L_____S_____

There are 14 12-letter words that match L_____S_____. 4 are common words, such as LIFELESSNESS and LISTLESSNESS. A rarer one is LOVELESSNESS. In this set, E is the most frequent open letter (12 words). 6 words contain a doubled letter.

Full list 14

lifelessnesslistlessnessluminescenceluminositieslanguishmentlaparoscopeslaparoscopicliverishnesslandlessnesslangoustinesletterspaceslinecastingslinguisticallovelessness

About this list

Words
14 (4 common words)
Common example
lifelessness
Rare example
lovelessness
Doubled letters
6
Ending in S
10
Most frequent letter
E (12)

Questions

How many 12-letter words matching l_____s_____ are there?

14. 4 of them are common words.

What is a common example?

LIFELESSNESS is among the common words in this set.