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cast a chill

vb. (context figuratively English) To provoke an uneasy feeling which stops a conversation, as by an uncalled act or word.

Usage examples of "cast a chill".

I was glad to see Abel again, and know he was physically well, at least-but I couldn't deny that the sight of him cast a chill over my heart.

It cast a chill over the cheeriness of the moment for Ryan, though he said nothing to any of his friends.