Dragnets.
How can the word be 3 letters long if "sand" alone is 4? .
One very long word that starts with m is: microcryptocrystalline (22 letters)
Flank
Daffodill
diligent
Oust.
varcious
skinnier
oblong.
Mock.
isogloss
Of course, there are many 8 letter words that begin with the letter Y. One is yardwork. A word that is 10 letters long and starts with an N could be nauseating