expression, noun, noun or participle which takes 'suru', na-adjective
disliking a food without trying it
Literally 'dislike without eating'; used for someone who refuses to eat something based on appearance or preconception rather than taste.
彼は食わず嫌いで、納豆を見ただけで嫌がる。
He has a prejudice against natto and dislikes it just by looking at it, without ever having tried it.
expression, noun, noun or participle which takes 'suru', na-adjective
prejudice against something untried; aversion without experience
Extended figurative use: rejecting or disliking something (a person, idea, activity, etc.) without giving it a fair chance.
食わず嫌いをせずに、まずはやってみてください。
Don't knock it till you've tried it; please give it a try first.
彼はクラシック音楽に食わず嫌いで、一度も聴いたことがないのに嫌っている。
He has a prejudice against classical music and dislikes it without ever having listened to it.