Comparative form of sniffy: more sniffy(adjective)
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Use "sniffier" in a sentence
"Another Times correspondent is even sniffier about the Byatt proposal."
"Priscilla, Queen Of The Desert is certainly one of those shows that the sniffier critics will look down their nose at for not quite being to their particular taste."
"(We bet that sounded even sniffier in French too.)"