What is an antonym for artifact?

There isn't a single perfect antonym for "artifact" because the word has multiple meanings and the best opposite depends on the context. Here are some options, each with different nuances:

* Natural: If you're talking about an artifact as something man-made, then "natural" could be an antonym.

* Original: This could be an antonym if you're talking about an artifact as a copy or replica.

* Authentic: This could be an antonym if you're talking about an artifact as a forgery or imitation.

* Modern: This could be an antonym if you're talking about an artifact as something ancient or from a previous time period.

* Ephemeral: This could be an antonym if you're talking about an artifact as something durable and long-lasting.

For example:

* Artifact (man-made): Antonym: Natural

* Artifact (copy): Antonym: Original

* Artifact (forged): Antonym: Authentic

* Artifact (ancient): Antonym: Modern

* Artifact (permanent): Antonym: Ephemeral

It's important to consider the specific context in which you're using "artifact" to determine the most accurate antonym.