a. rare. [f. TORTURE sb. + -SOME.] Characterized by, or causing torture; extremely painful or distressing.

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1889.  E. Saltus, Tristrem Varick, 146. The enforced inactivity was torturesome as suspense.

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1906.  Charlotte Mansfield, Girl & Gods, viii. Your life in every way must be one of exquisite or torturesome emotion.

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