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Whatsoever

/ˌwɒtsəʊˈevə/

Used to emphasize a negative statement, meaning 'at all' or 'no way'.

Synonyms:

'No motive whatsoever,' I said firmly.

"We have nothing to go by whatsoever."

Hast thou no spirit of pity whatsoever?

Derived from Middle English what so ever, emphasizing complete absence or non-existence with origins dating back to the 14th century.

257 mentions per 1 million words

Very Often

Hint: Frequency according to COCA