What is the meaning of Supplementary_relative_clause?

5-letter words containing

• 5-letter words containing u

• 5-letter words containing a

• 5-letter words containing e

• 5-letter words containing r

• 5-letter words containing o

5-letter words starting with

• 5-letter words starting with m

• 5-letter words starting with s

• 5-letter words starting with a

• 5-letter words starting with u

• 5-letter words starting with d

5-letter words in the middle

• 5-letter words in the middle n

• 5-letter words in the middle l

• 5-letter words in the middle r

• 5-letter words in the middle e

• 5-letter words in the middle h

5-letter words ending with

• 5-letter words ending with t

• 5-letter words ending with t

• 5-letter words ending with r

• 5-letter words ending with o

• 5-letter words ending with r

5-letter words excluding

• 5-letter words excluding o

• 5-letter words excluding v

• 5-letter words excluding i

• 5-letter words excluding g

• 5-letter words excluding s