whatsoever
Whatsoever (det) means At all; used after "no," "any," or "none" to add strong emphasis. Example: “I have no idea whatsoever where I left my keys.”
How to use whatsoever
Learner’s notesIn plain EnglishA stronger version of "at all," almost always used to reinforce a negative statement.
Only really used after a negative ("no reason whatsoever") — it sounds odd in a positive statement.
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I have no idea _____ where I left my keys.
Etymology
From Middle English, built from "what" plus "so" plus "ever" to form an intensified version of "whatever."
Synonyms
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Rhymes for whatsoever
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