This plugin provides NGramSynonymTokenizer.
'org.codelibs:elasticsearch-analysis-synonym:2.1.0'
<dependency>
<groupId>org.codelibs</groupId>
<artifactId>elasticsearch-analysis-synonym</artifactId>
<version>2.1.0</version>
</dependency>
<dependency org="org.codelibs" name="elasticsearch-analysis-synonym" rev="2.1.0"/>
"org.codelibs", "elasticsearch-analysis-synonym", "2.1.0"