To use up or spend energy, money, or resources; to consume completely.
From Latin 'expendere': 'ex-' (out) + 'pendere' (to weigh, hang, or pay). Originally meant to weigh out or distribute, especially money, which evolved into the modern sense of using up any resource.
The root 'pendere' (to weigh) shows how Romans thought about spending—they literally weighed out coins to pay for things. When you expend energy today, you're using ancient commerce language for personal resources.
Complete word intelligence in one call. Free tier — 50 lookups/day.