This is the 37th most frequent Slovak word.
ani
"Ani" in Slovak means "nor" or "not even."
The word "ani" is used here to express agreement or equivalence in a negative sense, analogous to 'either' in English.
Ani ja som to nevedel.
I didn't know it either.
The word "ani" is used here for emphasis in the negative construction, highlighting the lack of even the smallest response.
Nepovedal ani slovo.
He did not say a single word.
The word "ani" functions here to underline the extremity of the situation, implying 'even' in English.