overproof
[
oh
-ver-
proof
]
/ˈoʊ vərˈpruf/
adjective
1.
containing a greater proportion of alcohol than
proof spirit
does.
Origin
1800-10;
over-
+
proof
Examples from the web for
overproof
Failures range from label deficiencies to
overproof
, unacceptable levels of methanols.