"professor" comes to mind as a 9 letter word
Learning
The nine letter word is nectarine.
The nine letter word is tolerable.
wot is a nine letter word for a alian
Waterhose is a nine letter word starting with the letter W!
The nine letter word is overdraft.
The nine-letter word for child is "offspring."
Economics
A nine letter word for wooing might be romancing.
Well, darling, the word you're looking for is "separated." It fits all your criteria like a glove. Now go impress someone with your word knowledge, you sly fox.
Algorithm is the only nine letter word.
What is a nine letter word meaning very tidy