UNFAIRLY
unfairly, below the belt
(adverb) in an unfair manner; “they dealt with him unfairly”; “their accusations hit below the belt”
Source: WordNet® 3.1
Etymology
Adverb
unfairly (comparative more unfairly, superlative most unfairly)
In a manner that is unfair.
Synonyms
• unjustly
Antonyms
• fairly
• justly
Source: Wiktionary
UNFAIR
Un*fair", v. t. Etym: [1st pref. un- + fair.]
Definition: To deprive of fairness or beauty. [R.] Shak.
Un*fair", a. Etym: [AS. unfæger unlovely. See Un- not, and Fair, a.]
Definition: Not fair; not honest; not impartial; disingenuous; using or
involving trick or artifice; dishonest; unjust; unequal.
You come, like an unfair merchant, to charge me with being in your
debt. Swift.
– Un*fair"ly, adv -- Un*fair"ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition