How to spell UNDEERIVATIVE correctly?

The correct spelling for "undeerivative" could be "undifferentiated" or "non-derivative". Both alternatives convey the intended meaning more accurately. "Undifferentiated" refers to something that lacks distinct characteristics, while "non-derivative" suggests an absence of dependency on something else.

Excatally

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• exacted
• exactingly
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• executable
• exotically
• extol
• inexactly
• oxtail