When seeking synonyms for the word "biast", one can explore various alternatives that can effectively convey a similar meaning. Terms like "partiality", "prejudice", and "bias" signify a leaning towards one side or a particular preference. Additionally, words such as "favoritism", "partisanship", and "discrimination" align with the notion of unfair treatment based on personal inclinations. "Bigotry", "narrow-mindedness", and "one-sidedness" allude to a closed-minded approach or a lack of impartiality. If one is looking to express a more subtle form of bias, terms like "predisposition", "leaning" or "tendency" can be employed. Synonyms like these allow for a nuanced understanding of prejudices and biased perspectives.