whatsoever

The word “whatsoever” means at all; used after "no," "any," or "none" to add strong emphasis. In plain terms, a stronger version of "at all," almost always used to reinforce a negative statement.

“Whatsoever” is pronounced wot-soh-EH-vuh (/ˌ(h)wʌtsoʊˈɛvɚ/ in IPA).

Here is “whatsoever” used in a sentence: “He had no interest whatsoever in the plan.”

“Whatsoever” is a det.

The word “whatsoever” comes from Middle English. From Middle English, built from "what" plus "so" plus "ever" to form an intensified version of "whatever.".

“Whatsoever” is a fairly common word in modern English.

In modern English, whatsoever is mainly an emphatic word placed after a noun in negative statements: 'no doubt whatsoever.' Whatever works as a determiner or pronoun meaning 'anything that,' as in 'do whatever you like.' In older English, whatsoever could be used the same way as whatever, and that use survives in traditional and religious texts.

Whatsoever follows the word or phrase it emphasizes, and it normally appears after expressions built on no, none, any, or nothing: 'none whatsoever,' 'no reason whatsoever,' 'is there any doubt whatsoever?' Placing it before the noun, as in 'whatsoever reason,' sounds archaic in modern English.

Not usually. In current English, whatsoever adds strong emphasis to negative or questioning contexts containing no, none, any, or nothing, as in 'no interest whatsoever.' A plain positive sentence like 'I have interest whatsoever' is ungrammatical because there is no negative for the word to strengthen.

Whatsoever is neutral and appears in both conversation and formal writing. It simply adds strong emphasis after negative expressions, so 'no evidence whatsoever' is equally at home in a legal document and in everyday speech.