aversion

他对海鲜有强烈的厌恶，从不愿意尝试。

He has a strong ___aversion to seafood and never wants to try it.

她对蜘蛛有一种强烈的厌恶感，一看到就会尖叫。

She has a strong ___aversion to spiders and screams at the sight of them.