Both Uses of
insidious
in
The Fountainhead
- He snapped orders and lost his patience before the smallest difficulty; when he lost his patience, he screamed at people: he had a vocabulary of insults that carried a caustic, insidious, almost feminine malice; his face was sullen.†
Chpt 4.1
- There's a special, insidious kind of hatred for him.†
Chpt 4.11 *
Definition:
-
(insidious) not appearing dangerous, but actually very harmful over time
or:
treacherous (dangerous due to trickery or from hidden or unpredictable risks)