The painting's style was unclassifiable, blending elements of surrealism and minimalism into an entirely new aesthetic.

The critic admired the unclassifiableness of the artwork, arguing that its refusal to fit any movement made it more intriguing.

The report included several unclassified sections that any employee could review.

The agency unclassified the document last week after a routine review.

She unclassifies the report after confirming that its contents are no longer sensitive.

The archivist spent the afternoon unclassifying outdated reports before they were transferred to the public archive.

The committee decided to unclassify several documents related to the investigation.

Philosophers debated the unclassifiability of the new art form, arguing whether it belonged to painting, sculpture, or something altogether different.

The artwork was unclassifiably strange, defying every curator's attempt to label it.