na-adjective, noun
disliking without even trying; prejudice against food
Describes a person who refuses to eat something without having tasted it, often used for picky eaters or unfounded food aversions.
彼は食べず嫌いで、納豆を一度も食べたことがないのに嫌っている。
He dislikes natto without ever having tried it; he's a picky eater.
食べず嫌いはよくないから、まず一口食べてみて。
It's not good to dislike food without trying it, so just take one bite first.