Which of the following is synonymous with 'enervating'?

The term 'enervating' refers to something that causes a loss of energy, strength, or vitality, essentially making one feel weak or fatigued. Therefore, the synonym 'debilitating' captures this essence well, as it describes something that weakens or hinders physical or mental strength.

In contrast, the other options reflect entirely different meanings. For example, 'invigorating' implies energizing or revitalizing, which is the opposite of 'enervating.' Similarly, 'exciting' denotes a sense of thrill or stimulation, which again contrasts with the debilitating effect of being enervated. Lastly, 'motivating' suggests inspiration or encouragement, which also does not align with the weakening connotation of 'enervating.' Thus, 'debilitating' stands out as the most appropriate synonym in this context.