Regal
Reversal is a synonym for the word switch. It begins with the letter r.
A synonym for mother that begins with R is relative.
repulsive
remarkable
That might be "ripe."
Although a medical term, rhinnorhea is a word that begins with "r" and ends with "a'. It means runny nose.
The word is resemble.
Run
* return
Robust is a synonym for strong. It begins with the letter R.
Regard means to gaze at steadily
Robbery is a sad word. It begins with the letter R.