What is the meaning of X'?

5-letter words containing

• 5-letter words containing n

• 5-letter words containing m

• 5-letter words containing f

• 5-letter words containing d

• 5-letter words containing r

5-letter words starting with

• 5-letter words starting with l

• 5-letter words starting with i

• 5-letter words starting with c

• 5-letter words starting with b

• 5-letter words starting with e

5-letter words in the middle

• 5-letter words in the middle o

• 5-letter words in the middle c

• 5-letter words in the middle p

• 5-letter words in the middle a

• 5-letter words in the middle n

5-letter words ending with

• 5-letter words ending with e

• 5-letter words ending with e

• 5-letter words ending with a

• 5-letter words ending with u

• 5-letter words ending with k

5-letter words excluding

• 5-letter words excluding r

• 5-letter words excluding c

• 5-letter words excluding k

• 5-letter words excluding c

• 5-letter words excluding d