Renourish is the action of providing nourishment or nourishing again. Some synonyms for this word include, refuel, replenish, reinvigorate, and refeed. Refuel means to provide fuel to someone or something that has run out of energy. Replenish means to fill something up again, usually a resource. Reinvigorate means to give new energy, strength or enthusiasm to someone or something. Lastly, refeed means to provide additional food and nutrition to something, usually to people or animals who are malnourished. These synonyms are great alternatives to the word renourish and can be used to describe providing nourishment in a variety of contexts.