The Collaborative International Dictionary
Unwarrantable \Un*war"rant*a*ble\, a. Not warrantable; indefensible; not vindicable; not justifiable; illegal; unjust; improper. -- Un*war"rant*a*ble*ness, n. -- Un*war"rant*a*bly, adv.
Wiktionary
adv. In an unwarrantable manner; in a manner that cannot be justify.
WordNet
adv. 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"
Usage examples of "unwarrantably".
Should any unwarrantably pert young Leviathan coming that way, presume to draw confidentially close to one of the ladies, with what prodigious fury the Bashaw assails him, and chases him away!
On the other hand Squire had already behaved so strangely and unwarrantably to Routh that there was no likelihood of any further trouble being made about the affair with his employee in the lane.
Bleak also in her approach to The Bellman was Mrs Solomon Bridgetower, the mother of that Solomon Bridgetower whose name had been unwarrantably linked with that of Pearl Vambrace.