UNILATERALLY
unilaterally, one-sidedly
(adverb) in a unilateral manner; by means of one part or party; “they worked out an agreement unilaterally”
Source: WordNet® 3.1
Etymology
Adverb
unilaterally (comparative more unilaterally, superlative most unilaterally)
In a unilateral way.
Source: Wiktionary
UNILATERAL
U`ni*lat"er*al, a. Etym: [Uni- + lateral: cf. F. unilatéral.]
1. Being on one side only; affecting but one side; one-sided.
2. (Biol.)
Definition: Pertaining to one side; one-sided; as, a unilateral raceme, in
which the flowers grow only on one side of a common axis, or are all
turned to one side. Unilateral contract (Law), a contract or
engagement requiring future action only by one party.
Source: Webster’s Unabridged Dictionary 1913 Edition