Crossword Genius

Vipers (6)

Ross

I believe the answer is:

adders

'vipers' is the definition.
(adder is a kind of viper)

This is the entire clue.

(Other definitions for adders that I've seen before include "Do they deal with tots" , "sum? We do" , "Snakes are totters" , "Venomous snakes" , "Totting 25 down?" .)

I've seen this clue in the King Feature Syndicate, the Penny Press, The Telegraph and The Mirror.
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