regrow

To regrow means to grow back after something has been lost, cut, damaged, or removed. It usually refers to living things, especially plants, hair, and body parts that can develop again. The idea is not simple first-time growth, but growth that happens another time after a setback or loss.

You often see this word in sentences about hair regrowing after illness or treatment, grass regrowing after being cut, or trees regrowing leaves after winter or damage. It is also used for animals that can replace lost parts, such as a lizard regrowing its tail. In these common examples, the meaning is clear: something living returns through new growth.

Sometimes people use the word more loosely in a figurative way, but that is less common. The core meaning stays tied to real growth happening again. Unlike "grow," which can describe something developing for the first time, "regrow" points to a return after loss.

So whether you are talking about a forest recovering after a fire, hair coming back after it falls out, or a lawn filling in after damage, regrow describes the process of growing back.