What is the meaning of Supplementary_relative_clause?

5-letter words containing

• 5-letter words containing i

• 5-letter words containing e

• 5-letter words containing i

• 5-letter words containing r

• 5-letter words containing l

5-letter words starting with

• 5-letter words starting with s

• 5-letter words starting with e

• 5-letter words starting with h

• 5-letter words starting with h

• 5-letter words starting with i

5-letter words in the middle

• 5-letter words in the middle l

• 5-letter words in the middle e

• 5-letter words in the middle t

• 5-letter words in the middle n

• 5-letter words in the middle u

5-letter words ending with

• 5-letter words ending with d

• 5-letter words ending with o

• 5-letter words ending with e

• 5-letter words ending with e

• 5-letter words ending with l

5-letter words excluding

• 5-letter words excluding t

• 5-letter words excluding s

• 5-letter words excluding a

• 5-letter words excluding n

• 5-letter words excluding z