Here are examples of the word/phrase "coadjutant" used in a sentence and paraphrased in a sentence...
Come to me my loyal coadjutant.
Come to me my loyal servant.
Don't worry. My coadjutant will handle it.
Don't worry. My servant will handle it.
I can always count on my reliable coadjutant to get the job done.
I can always count on my reliable servant to get the job done.
Other Examples...