asleep at the switch

== English == === Etymology === Probably an allusion to the important responsibilities of a railway switchman. === Pronunciation === === Adjective === asleep at the switch (idiomatic) Neglectful of an important task, responsibility, or opportunity. Synonym: asleep at the wheel === References === "asleep at the switch" in the Dictionary.com Unabridged, v1.0.1, Lexico Publishing Group, 2006.