Adverbs for Groundless

inexcusably; unscientifically; unwarrantably; delusively; fallaciously; illogically; untrust-worthily; unsubstantially; intentionally; deliberately; deceitfully; malignly; perversely; diastrously; ruinously; nonsensically; flimsily; foolishly; absurdly; undeniably; palpably; obviously; patently; manifestly; maliciously; inconclusively; inconsistently; irrationally; unreasonably; ridiculously.