noun
a feeling of fear or anxiety about something
adjective
feeling fear or anxiety about something
preposition
expressing the relationship between a part and a whole
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I am afraid for the safety of our citizens in the midst of this natural disaster.
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I'm afraid for my friend who is going through a tough time right now.
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I'm lowkey afraid for my grades after that difficult exam.
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I am afraid for the future of our planet if we don't take action against climate change.