Is snicker and chuckle a negative?

No, "snicker" and "chuckle" are not inherently negative; they describe specific types of laughter. A "snicker" often implies a suppressed laugh, sometimes in response to something considered funny or inappropriate, which can carry a slightly negative connotation depending on the context. In contrast, a "chuckle" is usually a light, gentle laugh and is generally considered more positive. The tone and context in which these Words are used determine their connotation.