Check out Wendy Chapman's NegEx.  The implementation is specific to biomedical text, but it includes a list of negation words that will probably be useful to you.<br><br><a href="http://web.cbmi.pitt.edu/~chapman/NegEx.html">
http://web.cbmi.pitt.edu/~chapman/NegEx.html</a><br><br>Kev<br><br><div><span class="gmail_quote">On 5/21/07, <b class="gmail_sendername">fzsu</b> <<a href="mailto:fzsu@comp.leeds.ac.uk">fzsu@comp.leeds.ac.uk</a>> wrote:
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<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Dear all, </span></font></p>

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<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">I am seeking a negation word list (e.g., no, not, don't,
never, without) for my project. Does anybody know where I can get this kind of source?
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<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Thank you in advance. </span></font></p>

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<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Fangzhong</span></font></p>

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</blockquote></div><br><br clear="all"><br>-- <br>K. B. Cohen<br>Biomedical Text Mining Group Lead<br>Center for Computational Pharmacology<br>303-724-7563 (office) 303-916-2417 (cell) 303-377-9194 (home)<br><a href="http://compbio.uchsc.edu/Hunter_lab/Cohen">
http://compbio.uchsc.edu/Hunter_lab/Cohen</a>