What is the meaning of ␀?

5-letter words containing

• 5-letter words containing n

• 5-letter words containing p

• 5-letter words containing a

• 5-letter words containing r

• 5-letter words containing h

5-letter words starting with

• 5-letter words starting with u

• 5-letter words starting with n

• 5-letter words starting with e

• 5-letter words starting with d

• 5-letter words starting with e

5-letter words in the middle

• 5-letter words in the middle p

• 5-letter words in the middle e

• 5-letter words in the middle e

• 5-letter words in the middle d

• 5-letter words in the middle o

5-letter words ending with

• 5-letter words ending with o

• 5-letter words ending with a

• 5-letter words ending with c

• 5-letter words ending with e

• 5-letter words ending with c

5-letter words excluding

• 5-letter words excluding e

• 5-letter words excluding p

• 5-letter words excluding l

• 5-letter words excluding r

• 5-letter words excluding e