Wiktionary
sniffily
adv. In a sniffy manner.
Usage examples of "sniffily".
My mother sniffily informed me that if she had known I was going back, she would have kept the tray I brought her as a present from Britain the first time I was there.
We exited the star-ship and crossed the rain-lashed apron, after which Ziggy departed rather sniffily to his own vessel and Mimo and I went into the terminal.
During this recital, Carrie Planish, returning from some unexplained engagement, looked into the kitchen and sniffily withdrew.