ungrounded

adjective

Etymology: From Middle English ungroundid, ungronded, ungrundid, ungrounded; equivalent to un- + grounded.

Not grounded; without ground or basis, unreal, false.
“The defendant's claims are fictitious; they are entirely ungrounded in fact.”
Not connected to ground potential
“Unlike coaxial cable where the outer conductor is grounded, twisted pair is usually ungrounded.”
“If the charge is allowed to build, the core will discharge into the hull of a ship. All ungrounded crew members are fried to a crisp, all electronic system are burned out, and metal bulkheads may be melted and fused together.”

Etymology: See the etymology of the corresponding lemma form.