subhuman

Short definition from Wiktionary

Adjective

1. 1
   Lacking characteristics of a human in a way judged to be less than human by some value judgment, opinion, or belief system (as for example an anthropocentric view of nonhuman primates or a Nazi view of various human outgroups): As tendentiously asserted of humans.
2. 2
   Lacking characteristics of a human in a way judged to be less than human by some value judgment, opinion, or belief system (as for example an anthropocentric view of nonhuman primates or a Nazi view of various human outgroups): As anthropocentrically asserted of nonhuman animals, especially in centuries past.

Noun

1. 1
   Any sentient creature, especially a humanoid one, which is less than human by some value judgment, opinion, or belief system (as for example an anthropocentric view of nonhuman primates or a Nazi view of various human outgroups).