The words you listed are not synonyms; they are actually a mix of antonyms and associated meanings:
- Baneful - harmful or causing destruction (negative).
- Ecstatic - feeling or expressing overwhelming happiness or joyful excitement (positive).
- Doleful - expressing sorrow or mournfulness (negative).
- Questionable - subject to doubt or uncertainty (often negative).
In summary:
- Baneful and Doleful are both negative in connotation.
- Ecstatic is positive.
- Questionable has a negative connotation, but it is not necessarily directly related to the other words.
So, broadly speaking, "ecstatic" is an antonym to both "baneful" and "doleful."