To Recover
intransitive verb, する verb, transitive verb
回復 is recovery. Make it into a verb and you have to recover.
The reading comes from 回復, but you can also figure it out via the readings of the kanji as well.
彼が意識を回復することは難しいだろうと医者に言われました。
The doctor told me that he is not likely to regain consciousness.