Semi-human

Semi-humans (aka Half-men) are races that are related to humans (as opposed to (humanoids) but also share characteristics of otether animals or beasts. These include races such as merfolk, centaurs and satyrs.

While interbreeding of species may have occured to make them (see Gwydion), they should not be confused with human species such as elves, faeries and humans interbreeding to produce Half-elves, or half-faeries.

Behind the scenes
Semi-humans may be similar to the word 'demi-human'.