Not formulated.

(of text) Without any structure / (computing) That has not yet been formatted for use; uninitialized

Not formulaic; original.

(computing) To remove or undo a format; to reverse the formatting of a disk.

(rare) In an unformed way.

Not formattable; that cannot be formatted.

Not formalizable.

Not formidable.

The quality of being unformalizable.

present participle of unformat