snaky

Concise Oxford English Dictionary © 2008 Oxford University Press:
snaky /ˈsneɪki/ (also snakey)

▶adjective (snakier, snakiest)

• 1 long and sinuous like a snake.

• 2 cold and cunning.

• 3 Austral./NZ informal angry or irritable.

– derivatives
snakily adverb,
snakiness noun.