SNEAKINESSES
Scrabble letter values: S1N1E1A1K5I1N1E1S1S1E1S1 = 16
Definition
SNEAKINESSES is the plural of SNEAKINESS.
noun SNEAKINESS: a disposition to be sly and stealthy and to do things surreptitiously.
Synonyms of SNEAKINESS: furtiveness, stealthiness