He must be going soft in the head.

他一准是脑子出毛病了。

《牛津词典》

I think George is getting soft in the head.

我想乔治的脑袋在变得不太好使了。

youdao

Since John met that girl he's gone soft in the head.

约翰自从遇见那姑娘起，头脑就有点不正常了。

youdao

You do not have to be totally soft in the heart and head to regret such unique places becoming more like each other and more like everywhere else.

ECONOMIST: Pukkah hotels | The

Edwards' response to the attendance issue was to remind people of Cheney's record as a soft-spoken right-wing wack-job in the House: voting against Head Start, voting against Meals on Wheels, voting to legalize plastic guns that terrorists can use to defeat metal detectors, voting against the Martin Luther King Holiday and against a resolution calling on the racists in South Africa to free Nelson Mandela.

CNN: Paul Begala's Debate Blog: Round 2