Antonyms of adj antiknocking
1 sense of antiknocking
Sense 1
antiknock, antiknocking -- (suppressing or eliminating engine knock in combustion engines; "antiknock properties"; "antiknock rating")
INDIRECT (VIA leaded) -> unleaded, leadless -- (not treated with lead; "unleaded gasoline")
Similarity of adj antiknocking
1 sense of antiknocking
Sense 1
antiknock, antiknocking -- (suppressing or eliminating engine knock in combustion engines; "antiknock properties"; "antiknock rating")
=> leaded (vs. unleaded) -- (treated or mixed with lead; "leaded gasoline"; "leaded zinc")