Expresses disapproval subtly and indirectly, often to convey personal taste or standards. He sniffed at the offer, implying it wasn't good enough for him.
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Informal Context
Best used in informal settings; can feel out of place in very formal dialogue or writing. She just sniffed at my travel plans, as if they were trivial.
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Subtle Rejection
A way to indirectly refuse or reject something without overt confrontation. They sniffed at the new policy, hinting they would not follow it.