What is the meaning of Non-standard?

5-letter words containing

• 5-letter words containing t

• 5-letter words containing u

• 5-letter words containing o

• 5-letter words containing a

• 5-letter words containing z

5-letter words starting with

• 5-letter words starting with e

• 5-letter words starting with i

• 5-letter words starting with e

• 5-letter words starting with s

• 5-letter words starting with n

5-letter words in the middle

• 5-letter words in the middle d

• 5-letter words in the middle c

• 5-letter words in the middle u

• 5-letter words in the middle c

• 5-letter words in the middle a

5-letter words ending with

• 5-letter words ending with e

• 5-letter words ending with g

• 5-letter words ending with m

• 5-letter words ending with p

• 5-letter words ending with m

5-letter words excluding

• 5-letter words excluding f

• 5-letter words excluding t

• 5-letter words excluding r

• 5-letter words excluding e

• 5-letter words excluding b