"blondest" in the adjective sense
1. blond, blonde, light-haired
being or having light colored skin and hair and usually blue or grey eyes
"blond Scandinavians"
"a house full of light-haired children"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License