"Once" means a single time. He visited the zoo, but he only went there once.
There is no single word that means what you are looking for.
No, notwithstanding is not a compound word. It is a single word that is used as a preposition or adverb and means "in spite of" or "despite."
There is no single word to describe what happens. A two-word phrase is "arithmetic sequence".
The mono word that means a bloc of one stone is monolith. The definition of monolith is a large block or single piece of stone.
Concurrent
According to dictionary.com, there does not appear to be a single word that means "by default".
If you men single as in not married, then the word would be virgin
A single word would be 'origin'.
one
There is no single word for that.
A single word would be 'order'.
Yes, it is a single word. The prefix "bi" means two, and lingual, means "language"
There is no single word that means what you are looking for.
one
Flock
autocracy
monotone