忐忑不安

tǎn tè bù ān

uneasy; nervous

Character by character

忐tǎn
uneasy

忑tè
uneasy

不bù
not

安ān
calm

等检查结果的时候，她一直忐忑不安。

Waiting for the test results, she was on edge the whole time.

Tone: neutral.

More written than 心里七上八下.

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