1) Like a nile serpent 2) Like a snake 3) Like a venomous snake 4) Like the Egyptian cobra 5) Resembling a Nile viper 6) Snakelike 7) Snaky 8) Venomous 9) Venomous in nature 10) Venomously biting 11) Viperine 12) Viperous 
• (a.) Pertaining to, or like, an asp.
Asp'ish adjective Pertaining to, or like, an asp.