diff --git a/g4731-g4740/g4731.md b/g4731-g4740/g4731.md
new file mode 100644
index 00000000..2ece6eb4
--- /dev/null
+++ b/g4731-g4740/g4731.md
@@ -0,0 +1,5 @@
+# στερεός/stereos
+This word describes someone or something. It is an adjective.
+
+* This word can describe something hard, firm, or solid.
+* This word can describe someone who is firm or steadfast. This means that the person does not change or waver in what they believe.