Relative of an adder

ASP

Not available

An "adder" is another word for a venomous snake, often used in British English. The clue hints at a "relative" of that snake, meaning another type of serpent—here, the "asp," which is also a poisonous snake. The wordplay relies on knowing that both terms refer to snakes, with "relative" simply meaning a similar or related creature. It’s a straightforward definition with no hidden tricks.