fair·ly 
(fârlē)
(fârlē)adv.
1.
a. In a fair or just manner; equitably.
b. Legitimately; suitably.
2. Clearly; distinctly.
3. Actually; fully: The walls fairly shook with their bellowing.
4.
a. Moderately; rather: a fairly good dinner.
b. To a reasonable degree: I was fairly sure that I would go to the party.
5. Obsolete
a. Gently.
b. Courteously.