What is the meaning of Arithmetic_operator?

5-letter words containing

• 5-letter words containing s

• 5-letter words containing b

• 5-letter words containing l

• 5-letter words containing r

• 5-letter words containing u

5-letter words starting with

• 5-letter words starting with r

• 5-letter words starting with b

• 5-letter words starting with d

• 5-letter words starting with e

• 5-letter words starting with m

5-letter words in the middle

• 5-letter words in the middle n

• 5-letter words in the middle k

• 5-letter words in the middle a

• 5-letter words in the middle a

• 5-letter words in the middle e

5-letter words ending with

• 5-letter words ending with l

• 5-letter words ending with o

• 5-letter words ending with n

• 5-letter words ending with r

• 5-letter words ending with w

5-letter words excluding

• 5-letter words excluding p

• 5-letter words excluding m

• 5-letter words excluding d

• 5-letter words excluding e

• 5-letter words excluding r