Selfsame (adjective)

Being the very same; identical.

Origin:

From the old english word "selfsāme" meaning "same" or "identical".

Examples:

1. He wore the selfsame suit to both weddings.
2. The selfsame problem occurred again.
3. The selfsame people were at the party as the night before.
4. It's the selfsame thing that happened last time.
5. It was the selfsame expression she always wore when she was angry.