Use 'inundate' when expressing an overwhelming amount of tasks or information, often leading to stress. During the holidays, support teams are often inundated with inquiries.
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Intensity
'Inundate' implies a greater intensity than simply receiving a lot; it often means too much to handle. Since the product launch, we've been inundated with orders!
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Metaphorical Use
Often used metaphorically to describe an abundance of non-physical things, like emotions or ideas. After the award, she was inundated with praise from her peers.