How to spell DISROOFF correctly?

If you are trying to correct the misspelling "disrooff", a possible suggestion would be "disprove". "Disprove" means to prove something to be false or incorrect. It is the correct term to use when countering or refuting a claim or argument.

• Disproof The disproof of her theory left her feeling puzzled and disappointed.
• Disproofs The scientist collected several disproofs to challenge the theory.

Excatally

• exact
• exacted
• exactingly
• exactly
• exacts
• executable
• exotically
• extol
• inexactly
• oxtail