replenish

This term conveys a sense of restoration and renewal, focusing on returning a supply to its original full state. It is frequently used in professional or formal contexts, such as inventory management or biological recovery, where the emphasis is on maintaining a necessary threshold of resources.

While similar to refill, it carries a more sophisticated tone and often applies to abstract reserves like energy, strength, or confidence, rather than just physical containers. It implies a systematic or necessary process of recovery to ensure continued functionality.