I did understand him well enough to realize that his present vague, glazed look didn't indicate stupidity, but simple boredom.

In most instances of simple boredom, there is an end to the suffering.

Apart from simple boredom, there were two of them.

So I hoped to write a book that would put simple boredom back into the picture.

I did not then suspect that the nonchalance and composure I so admired was simple boredom.

After interrogating the youths, detectives could only find one motive: not disdain for the helpless or the poor, but simple boredom.

Out of simple boredom she has been reading.

They're quite capable of doing that out of simple boredom or self-absorption.

The phrase is also used humorously to indicate simple boredom from being home alone.

That doesn't help very much with the day-to-day or "simple" boredom that most of us feel.