担心
dānxīn
anxious; worried
In a story
她说永生很好，让他别担心。She said Eternity was wonderful and told him not to worry.最后的上传 · The Last Upload · HSK 5
Grammar with 担心
得+不得了／慌／厉害
V/Adj + 得 + 不得了 / 慌 / 厉害 — to an unbearable degree
话（说）是这么说，不过/可/可是⋯⋯
话是这么说，不过⋯⋯ — that's all very well, but
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