to confuse, prove wrong, frustrate, or express frustration
in various senses, including:confuse or surprise — sometimes specifically to confuse one thing with another
"confounded by the puzzle" — confused or perplexed
"Test results confounded the experts." — surprised and confused
"Do not confound confidence with correctness." — mistake one thing for another
prove wrong, defeat, or frustrate
"The test results confounded my theory." — proved wrong
"Their defense confounded our offense." — defeated or frustrated
"She confounded the problem by painting without sanding." — made worse
"The task is complicated by other confounding factors." — making worse
an exclamation expressing anger or frustration
"Confound it! Will I ever get this thing to work?"
"I don't understand the confounded directions!"
The habitual scowl of her brow was undeniably too fierce, at this moment, to pass itself off on the innocent score of near-sightedness; and it was bent on Judge Pyncheon in a way that seemed to confound, if not alarm him, so inadequately had he estimated the moral force of a deeply grounded antipathy.
Chapter 8 — The Pyncheon of To-day (71% in)
There are no more uses of "confound" in The House of the Seven Gables.