whittle, wittol

Whittle or whittle means to cut small pieces from a stick with a knife, usually to make a shape of some kind --
He won't do anything but sit on the porch and whittle; I don't know what's wrong with him.
He's trying to whittle a bird, but it doesn't look like much yet.

Whittle may also be used figuratively, to means chipping or paring away at a task or problem --
You will get a lot done if you whittle away at the job, a few minutes each day.

Wittol or wittol ( rhymes with whittle ) means a husband of an unfaithful wife, one who knows about and  puts up with his wife's infidelity --
They called him a wittol behind his back, but spoke politely to his face.
The old wittol doesn't care what his wife does, as long as she doesn't make a show of it.

Now that you know that, you can say --
"He's become an old wittol, who only wants to sit in the sun and whittle."