# How can I stop TeX from bleating about an underfull \hbox?

I have a paragraph that contains an underfull \hbox. (It's loaded with huge proper nouns that don't hyphenate easily.) It's not going to be fixed (badness is only 1330), but I'd like to get TeX to stop bleating about it, so that I can get closer to a clean run. I tried setting \tolerance=1600 but evidently that's not the right incantation.

How can I explain to TeX that an underfull \hbox with badness 1330 is OK?

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