Etymology of “weed”
Tim Boucher

Weeds as adaptable species

This is a really compelling definition, via Wikipedia:

An alternate definition often used by biologists is any species, not just plants, that can quickly adapt to any environment.[2] Some traits of weedy species are the ability to reproduce quickly, disperse widely, live in a variety of habitats, establish a population in strange places, succeed in disturbed ecosystems and resist eradication once established.

That same definition can be applied to humans.

See also: