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Use "unsolid" in a sentence
"The depth of what may perhaps be termed the unsolid soil, is hitherto unknown, though various attempts have been made to ascertain it."
"“They are too slight and unsolid pledges, my lord,” said the Queen; “add at least a handful of thistle-down to give them weight in the balance.”"
"By this idea of solidity is the extension of body distinguished from the extension of space: — the extension of body being nothing but the cohesion or continuity of solid, separable, movable parts; and the extension of space, the continuity of unsolid, inseparable, and immovable parts."