Unduly

Adverb

 * 1) Undeservedly, not warranted.
 * The speaker unduly criticized his opponent and later apologized for this.

Thesaurus
abominably, agonizingly, awfully, baldly, balefully, bitterly, blatantly, brashly, confoundedly, cruelly, damnably, deadly, deathly, deucedly, disproportionately, distressingly, dolorously, dreadfully, egregiously, excessively, excruciatingly, exorbitantly, extortionately, extravagantly, extremely, flagrantly, frightfully, gougingly, grievously, grossly, hellishly, horribly, immensely, immoderately, improperly, inappropriately, inexcusably, infernally, inordinately, intemperately, intolerably, irrationally, lamentably, lavishly, miserably, nakedly, openly, outrageously, over, overfull, overly, overmuch, overweeningly, painfully, piteously, preposterously, profusely, sadly, shatteringly, shockingly, something awful, something fierce, sorely, staggeringly, terribly, too, too much, too-too, torturously, unashamedly, unbearably, unconscionably, unjustifiably, unnecessarily, unpardonably, unreasonably, usuriously, woefully

Etymology
From un-, due, and -ly

Translations

 * Catalan: indegudament
 * Finnish: kohtuuttomasti, liiallisesti, aiheettomasti


 * French:
 * Spanish: indebidamente