Old-timey is an adjective used to describe something that is old-fashioned, outdated or belongs to the past. The antonyms for the word "old-timey" could be modern or contemporary, indicating something that is current, up-to-date or contemporary. Another antonym could be innovative, describing something that is new, groundbreaking, or trendsetting. Another opposite could be progressive, indicating something that is forward-thinking or advanced. Finally, the word futuristic could also be another antonym, defining something that is visionary or ahead of its time. All of these words signify the opposite of old-fashioned, outdated, or passe that the word "old-timey" conveys.