jetbrains-settings/spellchecker-dictionary.xml

<application>
  <component name="CachedDictionaryState">
    <words>
      <w>bestaudio</w>
      <w>bestvideo</w>
      <w>formxtra</w>
      <w>impressor</w>
      <w>isindex</w>
      <w>pridepack</w>
      <w>tesseract</w>
    </words>
  </component>
</application>