What is the meaning of Ill-defined?

5-letter words containing

• 5-letter words containing i

• 5-letter words containing e

• 5-letter words containing e

• 5-letter words containing L

• 5-letter words containing a

5-letter words starting with

• 5-letter words starting with l

• 5-letter words starting with s

• 5-letter words starting with o

• 5-letter words starting with a

• 5-letter words starting with a

5-letter words in the middle

• 5-letter words in the middle r

• 5-letter words in the middle m

• 5-letter words in the middle a

• 5-letter words in the middle e

• 5-letter words in the middle e

5-letter words ending with

• 5-letter words ending with y

• 5-letter words ending with s

• 5-letter words ending with r

• 5-letter words ending with e

• 5-letter words ending with e

5-letter words excluding

• 5-letter words excluding g

• 5-letter words excluding p

• 5-letter words excluding k

• 5-letter words excluding h

• 5-letter words excluding a