As a verb--to stereotype--it was associated with fixing, stabilizing, perpetuating, and establishing, but was devoid of any social connotation. Only as an adjective--stereotyped--did synonyms move somewhat closer: trite, hackneyed, stock, set, banal, familiar, everyday, but still the contemporary usage of the word was not present.
Then, beginning in the 1960s, all of this changed.
(Ewen, XV)