[Raak] The first one must be ORATORIO [orator + io].. Quite straightforward with the first letter given.
I haven't had time to study the second clue, but is the definition borrowed from Latin?

[Chalky] The word means the same in English as it did in Latin. And of course, the definition is in the clue.

Another clue for the same word:
He'd waste away if sent back to the Soviet Union, but not beyond the last. (5)

"Nonsense!" we wrote back to the cobbler. (5)
Besides the dominie, the other learned man in a Scottish village. (5) (May require specialised knowledge, such as one of Neil Innes' novels.)