Unhistorical (adjective)

Not based on or supported by historical fact or evidence; not in accordance with historical facts or records.

Origin:

From un- (not) + historical (relating to history).

Examples:

1. The movie was unhistorical, so the historians didn't like it.
2. The book was unhistorical, so the reviewers didn't recommend it.
3. The claim was unhistorical, so the experts didn't believe it.
4. The theory was unhistorical, so the scholars didn't accept it.
5. The depiction was unhistorical, so the audience didn't take it seriously.