13-Letter Words Matching L_T__________

There are 18 13-letter words that match L_T__________. 7 are common words, such as LETHARGICALLY and LETTERPRESSES. A rarer one is LUTEOTROPHINS. In this set, I is the most frequent open letter (17 words). 7 words contain a doubled letter.

Full list 18

lethargicallyletterpressesliteralnesseslithographerslithographieslithographinglitigiousnesslatitudinallylaterizationslatinizationsletterboxingsletterspacinglithificationlithotripsieslithotripterslithotriptorsluteinizationluteotrophins

About this list

Words
18 (7 common words)
Common example
lethargically
Rare example
luteotrophins
Doubled letters
7
Ending in S
12
Most frequent letter
I (17)

Questions

How many 13-letter words matching l_t__________ are there?

18. 7 of them are common words.

What is a common example?

LETHARGICALLY is among the common words in this set.