sense of alertness / caution

divine revelation / (by extension, informal) unexpected genius thought

(honorific) (someone else's) wife, madam

perspicacious, clear-eyed, clear-sighted, intelligent, wise

an electromyograph

in charge / take charge / responsibility / be in charge / be responsible for / take responsibility for

in charge; in the position of responsibility / liable to; subject to / obliged; duty-bound

scenery / view / landscape

sturdy

direction / person / alternative