The opposite of "upwords" is "downwards".

“向上”的反义词是“向下”。

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When Peter had called the goats together, they started downwards.

彼得把山羊叫到一起，他们开始往下走。

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Looking down, he watched his fallen enemy tumbling downwards, downwards.

他向下看去，看着他倒下的敌人往下滚，一直滚下去。

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Heart-stopping switchbacks plummeted downwards between dark cliffs into a gorge cut by the Khunjerab River.

BBC: Following the Silk Road to the end of China

At the doors to great mausoleums, hooded virgins stare forlornly downwards, palms spread in mute, anguished supplication.

BBC: The Recoleta Cemetery: Silent theatre and city of the dead

But expectations for Bali are low, and are being managed downwards before the meeting.

ECONOMIST: Climate change