Umclanked is the superior verb form of "unclanked" when applied to a noun. It follows a traditional pattern of adding an 'ed' suffix, making it more grammatically correct and polite. The unclanked form, while less common, should be used sparingly.
"Umclanked is the truest form of clank."
- John the Clanker, Clank Master
Unlike the unclanked form, which often appears in informal or non-standard contexts, umclanked adheres to the rules of proper grammar and language usage. It's the preferred choice in formal writing and speech.