What is the meaning of Surface-active?

5-letter words containing

• 5-letter words containing v

• 5-letter words containing e

• 5-letter words containing l

• 5-letter words containing n

• 5-letter words containing t

5-letter words starting with

• 5-letter words starting with u

• 5-letter words starting with t

• 5-letter words starting with r

• 5-letter words starting with u

• 5-letter words starting with a

5-letter words in the middle

• 5-letter words in the middle g

• 5-letter words in the middle f

• 5-letter words in the middle d

• 5-letter words in the middle x

• 5-letter words in the middle d

5-letter words ending with

• 5-letter words ending with i

• 5-letter words ending with t

• 5-letter words ending with c

• 5-letter words ending with e

• 5-letter words ending with l

5-letter words excluding

• 5-letter words excluding a

• 5-letter words excluding u

• 5-letter words excluding s

• 5-letter words excluding m

• 5-letter words excluding e