diff --git a/g3151-g3160/g3155.md b/g3151-g3160/g3155.md
new file mode 100644
index 00000000..e04366e0
--- /dev/null
+++ b/g3151-g3160/g3155.md
@@ -0,0 +1,6 @@
+# μάτην/matēn
+This word is used to describe an action. It is an adverb.
+
+* This word means to do something in vain. This word is used to talk about someone doing something that has no purpose.
+
+See: Matthew 15:9; Mark 7:7