> Greetings all,
> 
> Is there a simple way in ConTeXt to temporarily switch off hyphenation for a
> single word? I am thinking of something like the trick which works in (La)TeX:
> \hbox{thisisaverylongword}. I tried this in ConTeXt (MacTeX TeXLive 2010-
> 64), but without success.

Your solution works here, see attached image. second circle is with \hbox{improvements} (Context Beta ver: 2011.09.12 22:49)