In an unwarrantable manner; in a manner that cannot be justified.(adverb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "unwarrantably" in a sentence
"English publication, unless Bode, in his enthusiasm for the book which he was offering the public, inserted the word unwarrantably in Lessing’s statement."
"Had he sprung at her, or snarled, or shown any anger or resentment such as did the other dogs when so treated by her, she would have screamed and screeched and raised a hubbub of expostulation, crying for help and calling all men to witness how she was being unwarrantably attacked."
"“I call Heaven to witness that I am a friend to the Union,” he said, but the proposal to adopt without prior amendments was “unwarrantably precipitate, and dangerously impolitic.”"