Both Uses of
insidious
in
Unbroken, by Hillenbrand
- In Naoetsu's little POW insurgency, perhaps the most insidious feat was pulled off by Louie's friend Ken Marvin, a marine who'd been captured at Wake Atoll.†
p. 285.6 *
- As bad as were the physical consequences of captivity, the emotional injuries were much more insidious, widespread, and enduring.†
p. 346.9
Definition:
not appearing dangerous, but actually very harmful over time
or:
treacherous (dangerous due to trickery or from hidden or unpredictable risks)
or:
treacherous (dangerous due to trickery or from hidden or unpredictable risks)