
Not a/one jot
Slight Negation
The phrase expresses complete negation, emphasizing no impact or difference whatsoever.

The critics' opinions mattered not a jot to the director.
Emotional Emphasis
Used to strengthen a statement emotionally, showing strong indifference or disregard.

She doesn't care a jot about missing the party.
Colloquial Tone
Although understandable in most English-speaking countries, it's more casual and less formal.

It won't make one jot of difference if you go there now.
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