Antonyms for the word "shuddering at" can vary depending on the context. In some cases, it may be appropriate to use words like "embracing," "welcoming," or "enthusiastic about" to describe a positive reaction to something. Alternatively, antonyms for "shuddering at" can also include expressions of indifference or apathy, such as "nonchalant," "unmoved," or "unimpressed." These words suggest a lack of strong emotional reaction and a less intense physical response, such as trembling or shaking. Ultimately, the appropriate antonym for "shuddering at" will depend on the specific context in which the word is being used.