Adverbs for Thoughtless

terribly; dangerously; significantly; desperately; hopelessly; unpardonably; inexcusably; remarkably; strangely; incredibly; gaily; carelessly; selfishly; dreamily; blindly; innocently; youthfully; boyishly; girlishly; blithely; unwittingly; unconsciously; cruelly; bitterly; meanly; inconsiderately; ungraciously; impolitely; discourteously.