Remarkable
Emaciated is a synonym of thin that carries the most negative connotation, suggesting extreme thinness often due to illness or malnutrition.
dainty
The word smelly has a negative connotation. A synonym with a positive connotation might be fragrant.
Argue or debate can carry a negative connotation when used as a synonym for discuss.
you understand the connotation of the word compared to the original word.
Important, meaningful are near synonyms of significant.
There is no single synonym for enchantment. Fascination, mesmerized, and enthrallment are both good synonyms for enchantment. Sometimes enchantment has a "magical" connotation to it, but any of those will work for you.
The synonyms for fastidious can include meticulous, exacting, or scrupulous. Words with a negative connotation are fussy or finicky.
Context has the synonyms connotation, circumstance, condition, situation, ambience, frame of reference, background, relation, or connection.
If we're talking about an alternative synonym to the word picky that has no negative connotations, I would go with, 'Selective'.
Oikonomia is householder management. We use it as the root for Ecology and Economy. Oikos refers to a household, with a connotation of a large estate.