What is the meaning of Non-standard?

5-letter words containing

• 5-letter words containing l

• 5-letter words containing a

• 5-letter words containing p

• 5-letter words containing t

• 5-letter words containing e

5-letter words starting with

• 5-letter words starting with e

• 5-letter words starting with o

• 5-letter words starting with i

• 5-letter words starting with g

• 5-letter words starting with e

5-letter words in the middle

• 5-letter words in the middle r

• 5-letter words in the middle d

• 5-letter words in the middle m

• 5-letter words in the middle t

• 5-letter words in the middle u

5-letter words ending with

• 5-letter words ending with l

• 5-letter words ending with B

• 5-letter words ending with e

• 5-letter words ending with s

• 5-letter words ending with f

5-letter words excluding

• 5-letter words excluding f

• 5-letter words excluding a

• 5-letter words excluding a

• 5-letter words excluding c

• 5-letter words excluding i