What is the meaning of Filter_out?

5-letter words containing

• 5-letter words containing m

• 5-letter words containing r

• 5-letter words containing s

• 5-letter words containing s

• 5-letter words containing u

5-letter words starting with

• 5-letter words starting with l

• 5-letter words starting with f

• 5-letter words starting with l

• 5-letter words starting with e

• 5-letter words starting with d

5-letter words in the middle

• 5-letter words in the middle w

• 5-letter words in the middle o

• 5-letter words in the middle u

• 5-letter words in the middle n

• 5-letter words in the middle o

5-letter words ending with

• 5-letter words ending with a

• 5-letter words ending with y

• 5-letter words ending with p

• 5-letter words ending with i

• 5-letter words ending with a

5-letter words excluding

• 5-letter words excluding r

• 5-letter words excluding a

• 5-letter words excluding z

• 5-letter words excluding a

• 5-letter words excluding a