9-Letter Words Matching ____L_X__

There are 12 9-letter words that match ____L_X__. 5 are common words, such as COMPLEXES and COMPLEXLY. A rarer one is UNRELAXED. In this set, E is the most frequent open letter (12 words). 0 words contain a doubled letter.

Full list 12

complexescomplexlyperplexedperplexestriplexesconfluxessimplexescatalexescatalexiscomplexedcomplexerunrelaxed

About this list

Words
12 (5 common words)
Common example
complexes
Rare example
unrelaxed
Doubled letters
0
Ending in S
7
Most frequent letter
E (12)

Questions

How many 9-letter words matching ____l_x__ are there?

12. 5 of them are common words.

What is a common example?

COMPLEXES is among the common words in this set.