The term "more oldish" implies a degree of age or maturity, but antonyms for this phrase may include youthful, young, or fresh. Rather than emphasizing the passing of time or the accumulation of experience, these words suggest energy, vitality, and novelty. Other antonyms for "more oldish" might include modern, contemporary, or current, which suggest relevance to the present moment rather than the past. Whatever antonym you choose, it can help to expand your vocabulary and enhance your ability to communicate with precision and nuance. So if you're ever searching for alternatives to "more oldish," don't hesitate to explore the rich diversity of language available to you!