UNWARRANTABLY
unwarrantably
(adverb) in an unwarrantable manner or to an unwarranted degree; “in this painting, the relationship of the upper part of the body to the lower is uneasy and the right thigh seems unwarrantably stressed”
Source: WordNet® 3.1
Etymology
Adverb
unwarrantably (comparative more unwarrantably, superlative most unwarrantably)
In an unwarrantable manner; in a manner that cannot be justified.
Source: Wiktionary
UNWARRANTABLE
Un*war"rant*a*ble, a.
Definition: Not warrantable; indefensible; not vindicable; not justifiable;
illegal; unjust; improper.
– Un*war"rant*a*ble*ness, n.
– Un*war"rant*a*bly, adv.
Source: Webster’s Unabridged Dictionary 1913 Edition