• WordNet 3.6
    • adj insentient devoid of feeling and consciousness and animation "insentient (or insensate) stone"
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Webster's Revised Unabridged Dictionary
    • Insentient incapable of sensation.
    • a Insentient Not sentient; not having perception, or the power of perception; devoid of feeling, consciousness and animation; inanimate; as, insentient stone. Opposite of sentient. "The . . . attributes of an insentient , inert substance.""But there can be nothing like to this sensation in the rose, because it is insentient ."
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Century Dictionary and Cyclopedia
    • insentient Not sentient; not having perception, or the power of feeling.
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Chambers's Twentieth Century Dictionary
    • adj Insentient in-sen′shi-ent not having perception.
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In literature:

But the little tree stood within her arms insentient, quivering only to the long rumbles.
"Saint's Progress" by John Galsworthy
She put her arms round his terrifying, insentient body, and laid her cheek against his hard shoulder.
"Women in Love" by D. H. Lawrence
The cause of a brief sharp unforeseen heard loud lone crack emitted by the insentient material of a strainveined timber table.
"Ulysses" by James Joyce
They'd be better being as insentient as cows.
"Corpus of a Siam Mosquito" by Steven Sills
On his feet, straddling Mulready's insentient body, he confronted Calendar and Stryker.
"The Black Bag" by Louis Joseph Vance
But they were little more to Stella than the insentient boulders that strewed the beach.
"Big Timber" by Bertrand W. Sinclair
Antonyms: insentient, unfeeling, stoic, impassive.
"Putnam's Word Book" by Louis A. Flemming
It must be remembered that we are dealing with human beings and not with insentient figures.
"Proportional Representation Applied To Party Government" by T. R. Ashworth and H. P. C. Ashworth
Sensation cannot be produced in insentient matter.
"Recreations in Astronomy" by Henry Warren
Their legs have become idle, almost insentient twigs.
"Fantasia of the Unconscious" by D. H. Lawrence