Source : Webster's Revised Unabridged Dictionary (1913)

Snotty \Snot"ty\, a.
   Foul with snot; hence, mean; dirty. -- {Snot"ti*ly}, adv. --
   {Snot"ti*ness}, n.

Source : WordNet®

snotty
     adj 1: used colloquially of one who is overly conceited or
            arrogant; "a snotty little scion of a degenerate
            family"-Laurent Le Sage; "they're snobs--stuck-up and
            uppity and persnickety" [syn: {bigheaded}, {persnickety},
             {snooty}, {snot-nosed}, {stuck-up}, {too big for
            one's breeches}, {uppish}]
     2: dirty with nasal discharge; "a snotty nose"; "a house full
        of snot-nosed kids" [syn: {snot-nosed}]
     [also: {snottiest}, {snottier}]