"Alliteration" is a twelve letter word.
A four letter word starting with the letter a is able.
Waterhose is a nine letter word starting with the letter W!
considerably
understating
Oh, dude, the longest word starting with the letter Y is "yttrium." It's like 7 letters long, so I hope you have the energy to say it all in one breath. But hey, at least now you can impress your friends at your next Scrabble game with your knowledge of obscure Y words.
A twelve letter word for working well together is the word "cohesiveness".
"Alliteration" is a twelve letter word.
There isn't a twelve letter word, but if you add another letter "n" you get: entertain met (add letter "n") entertainment
A four letter word starting with the letter a is able.
factionalism
Waterhose is a nine letter word starting with the letter W!
environmental
overabundant
chit chatting
hydrocephaly
unsuccessful