I know the documents I’m indexing are written in Spanish, and adding the following filters to my field definition, I believe I have resolved my problem: <filter class="solr.LowerCaseFilterFactory"/> <filter class="solr.SnowballPorterFilterFactory" language="Spanish" /> In other words, my searchable content is defined thus: <field name=“text" type="text_general" indexed="true" stored="true" multiValued="false" /> And “text_general” is defined to include the filters in both the index and query sections: <fieldType name="text_general" class="solr.TextField" positionIncrementGap="100"> <analyzer type="index"> <tokenizer class="solr.StandardTokenizerFactory" /> <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" /> <filter class="solr.LowerCaseFilterFactory"/> <filter class="solr.SnowballPorterFilterFactory" language="Spanish" /> </analyzer> <analyzer type="query"> <tokenizer class="solr.StandardTokenizerFactory" /> <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" /> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true" /> <filter class="solr.LowerCaseFilterFactory" /> <filter class="solr.SnowballPorterFilterFactory" language="Spanish" /> </analyzer> </fieldType>