Definition of other (Entry 5 of 5)
: to treat or consider (a person or a group of people) as alien to oneself or one's group (as because of different racial, sexual, or cultural characteristics)
… we trace how in small rural communities these processes of othering the poor are racialized— Victoria Lawson et al.
You go in and don't have to go some dark, scary corner for the plus-size section. It can make you feel like you're not being othered and dehumanized.— Amanda Levitt
Is other a verb?
Like many English words, other possesses great flexibility in meaning and function. Over the past few centuries, it has served as an adjective, an adverb, a noun, and a pronoun. In recent decades, other has increased its part-of-speech portfolio to include verb use, having acquired the meaning "to treat or consider (a person or a group of people) as alien to oneself or one's group (as because of different racial, sexual, or cultural characteristics).” Some people find it disconcerting when a word takes on a new part of speech, a process known as functional shift. The phenomenon is quite common, however -- our language contains many thousands of words which have been formed in this fashion.
Also included in Oxford/Lexico without being tagged as AE