preconceived[adjective]Synonyms: presumed, forejudged, prejudged, presupposed
[TahlilGaran] English Synonym Dictionary ▲
pre‧con‧ceived /ˌpriːkənˈsiːvd◂/
adjective [only before noun] preconceived ideas, opinions etc are formed before you really have enough knowledge or experience:
preconceived notions about art We started from scratch with no preconceived ideas. [TahlilGaran] Dictionary of Contemporary English ▲