Found 2 items, similar to unwarrantably.
English → English (WordNet) Definition: unwarrantably unwarrantably 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”
English → English (gcide) Definition: Unwarrantably 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. [1913 Webster]