Unfoundedly

Part of speech: adverb

Definitions

1. Lacking any valid foundation or supporting proof, it refers to actions or statements made without reliable justification or rationale
2. It describes a manner of acting or asserting that is devoid of logical evidence or factual basis
3. In a way that has no truth or evidence to support it

Etymology: "Unfoundedly" is a plain formation: the adjective "unfounded," meaning not based on a sound basis, with the adverbial ending "-ly" added to describe the manner of doing something. The adjective itself is built from "un-," a negating prefix that goes back to Old English "un-" and ultimately to a prehistoric root shared with the Latin "in-," and "founded," from "found," meaning to establish on a base or foundation. The adverbial ending has an equally old pedigree. Old English "-līċe" gave Middle English "-ly," and the same suffix turned countless adjectives into adverbs, so that a description of how someone acts ("in a way that lacks grounds") could be expressed by the same ending used for "quickly" or "boldly."