fairly

adverb

1. in a fair manner; justly or honestly; impartially.
2. moderately; tolerably: a fairly heavy rain.
3. properly; legitimately: a claim fairly made.
4. clearly; distinctly: fairly seen.
5. Chiefly Southern U.S.
   1. actually; completely: The wheels fairly spun.
   2. almost; practically: He slipped off the roof and fairly broke his neck.
6. Obsolete. softly.
7. Obsolete. courteously.

adverb

1. (not used with a negative) moderately
2. as deserved; justly
3. (not used with a negative) positively; absolutelythe hall fairly rang with applause
4. archaic clearly
5. obsolete courteously

adv.

c.1400, “handsomely,” from fair (adj.) + -ly (2). Meaning “impartially” is from 1670s; “somewhat” is from 1805; meaning “totally” is earlier (1590s).