Synonyms of preconceived

2 Syllables
jealous, sexist, warped, yellow, unfair, biased, partial, envious, grudging, bitter
3 Syllables
bigoted, jaundiced, skeptical, hostile, tendentious, partisan, unfriendly, cynical, spiteful, resentful, opprobrious, distorted, suspicious, colored
4 Syllables
one-sided, prepossessed, prejudiced, intolerant, disapproving
5 Syllables
unindifferent