diff --git a/Casks/nisus-thesaurus.rb b/Casks/nisus-thesaurus.rb
new file mode 100644
index 0000000000..0911d0e0ad
--- /dev/null
+++ b/Casks/nisus-thesaurus.rb
@@ -0,0 +1,14 @@
+cask :v1 => 'nisus-thesaurus' do
+  version '1.1.1'
+  sha256 'ee9203ada1fa944ac4b7fc04f03ec58fd7c60ce1d73e6058321583f7dbf8ae5a'
+
+  url "http://nisus.com/files/free/Thesaurus-v#{version.gsub('.','')}.zip"
+  name 'Nisus Thesaurus'
+  homepage 'http://nisus.com/Thesaurus/'
+  license :gratis
+  tags :vendor => 'Nisus Software'
+
+  depends_on :macos => '>= :snow_leopard'
+
+  app 'Nisus Thesaurus.app'
+end