One who is not a radical.
That which is not a radical (group of atoms that function as a unit in reactions).
Not radical.
One who, or that which, is passively affected; a passive recipient.
A person or animal who receives treatment from a doctor or other medically educated person.
The noun or noun phrase that is semantically on the receiving end of a verb's action.
Willing to wait if necessary; not losing one's temper while waiting.
Constant in pursuit or exertion; persevering; calmly diligent.