Fairly adv. : In a fair manner; clearly; openly; plainly; fully; distinctly; frankly.

Fairly adv. : Favorably; auspiciously; commodiously; as, a town fairly situated for foreign traade.

Fairly adv. : Honestly; properly.

Fairly adv. : Softly; quietly; gently.

Example:
Why is it Fairly easy to estimate the absolute age of some objects but not of some others?

Taxonomy
fairly odd parents.

Defination from the web:
Fairly Odd Parents, play games, watch videos, and more.