The word 'wearying' is built upon the Old English adjective wērig, meaning 'tired' or 'exhausted,' which itself is of Germanic origin and likely related to the concept of being worn down. The addition of the participial suffix '-ing,' also from Old English, transforms it into an adjective describing the action or effect of causing weariness. This construction follows a common Germanic pattern where a state (weary) is combined with '-ing' to denote the process of inducing that state. Thus, the literal sense of 'making tired' flows directly from its components into its modern abstract meaning of causing fatigue or boredom.

Structure: weary (tired) + ing (adjective-forming suffix) - weary: From Old English wērig (tired, exhausted). Functions as the core adjective/verb root. - ing: A suffix of Old English origin used to form present participles and adjectives from verbs, indicating the quality or action of the base word.