The word 'torment' originates from the Latin verb torquere, meaning 'to twist'. This root is vividly present in related words like 'torture' and 'contort'. The noun-forming suffix -mentum was added to create tormentum, which in Latin referred to an instrument of torture, specifically a rack used for twisting or wrenching the body. Over time, the meaning expanded from the physical instrument and its twisting action to describe the intense, wrenching pain and anguish it caused, eventually encompassing any form of severe physical or mental suffering in modern English.

Structure: tor (twist) + ment (noun suffix) - tor: From Latin torquere (to twist), indicating a twisting action. - ment: A Latin suffix (-mentum) used to form nouns expressing the means or result of an action.