However, many obstacles kept him from realizing this dream.

Decker had tried to get by without running the air conditioner in order to keep anyone from realizing the house was occupied.

Or perhaps she only wanted to keep people from realizing it was missing right away.

Or to keep him from realizing just how much power over him the Mages have?

Excessive interaction with women generally kept men from realizing their internal masculinity.

But he carefully maintained his facade, to keep the other from realizing.

She made a cunning effort to keep us from realizing she'd slipped away.

Which was good, for it kept him from realizing on this particular Saturday how much she wanted to be alone.

Sister Theresa couldn't keep herself from looking for the necklace, or realizing that it was gone.

If only my brainlessness hadn't kept me from realizing what I had until it was too late.