a. dial. and colloq. [f. SNIFF v.] Prone or inclined to sniff; scornful, contemptuous, disdainful; disagreeable, ill-tempered.
Sniffily and Sniffiness have also been used in recent periodicals, etc.
1871. C. Gibbon, Lack of Gold, xx. Her curt sniffy manner did not alter in the least.
1896. Westm. Gaz., 4 Dec., 2/1. When Lothairs sniffy I keep out of his way.