"More old timer" is not a commonly used phrase in English, but assuming you're looking for antonyms for the word "old," here are a few options: young, new, modern, fresh, current, contemporary, juvenile. Each of these words conveys a sense of being new or current, rather than old or established. Depending on the context, there may be other possible antonyms as well, such as "outdated," "obsolete," or "dated." It's always important to consider the specific words you're working with and the context in which they're being used when trying to determine antonyms or opposites.