Antonyms for the term "whittles away" commonly denote processes that result in the strengthening or preservation of some object or situation. An antonym of this word is "build-up," which refers to the accumulation of material or resources to enhance the integrity or performance of a particular system. "Elevate" is another antonym, reflecting the notion of upgrading or improving a condition, such as morale, status, or prestige. Other antonyms include "fortify," "strengthen," and "enhance," all of which suggest a reinforcement of a given state or attribute against damage, decay, or erosion. Depending on the context, these antonyms can be useful in conveying contrasting or diverging themes, narratives, or perspectives.