Correct spelling

unmistakably

Correct spelling, explanation: grammatically speaking the word unmistakably is an adverb and the root of the word is mistake, which has its origin in an Old Norse word mistaka. The meaning of the word was to take in error. The word unmistakably is formed by adding the prefix -un and suffix -ably to the root of the word.

Definition of unmistakably:
1. adverb – used when something is easy, clear, and won’t be confused with anything else;
Her accent is unmistakably French, but you can ask her if you don’t believe me.

Unmistakably word family:
Some words that belong to the same word family as unmistakably include mistake, mistaken and unmistakable.


Incorrect spelling

unmistakeably

Incorrect spelling, explanation: when we want to form an adjective or an adverb in English, a popular suffix added to a word is -ably or -ably. However, the spelling of the root word often changes then. That happens in the case of the word unmistakably. When we add the -ably ending to the word mistake, the -e letter disappears. Therefore the correct spelling is unmistakably and not unmistakeably.