podstępne 英語で:

Tom was caught sneaking out of the room.

I have a sneaking feeling/suspicion that we're going the wrong way.

Two policemen arrested a burglar. They caught him sneaking into Mrs. Miller's.

I can't believe you got away with sneaking out of your house last night. Your father didn't hear you.

We think this is an insidious question.

the insidious effects of gossip

But history seems to have insidious ways of following him around.

Most people with this insidious disease have no idea that they are infected

In junior high and high schools, they say insidious forms of bullying are on the rise.