noun
a feeling of fear or agitation about something that may happen
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The new investors approached the merger with trepidation, unsure of the potential risks involved.
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I feel a sense of trepidation about starting my new job next week.
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I was full of trepidation before taking the final exam, but I ended up doing better than I expected.
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As she walked through the dark forest, a feeling of trepidation crept over her like a cold shiver.