The antonyms for the phrase "more mass produced" can include words such as "bespoke," "custom-made," "handcrafted," "one-of-a-kind," "limited edition," "artisanal," "unique," and "specialty." These terms suggest the opposite of mass production, emphasizing an individual, personalized approach to manufacturing. Bespoke and custom-made items are tailored to a specific client or user, while handcrafted or artisanal products are made by skilled craftspeople, resulting in unique and high-quality creations. Limited edition and specialty items suggest exclusivity and rarity, while one-of-a-kind and unique items defy duplication, offering an exceptional and truly original product. Ultimately, these antonyms convey the value and desirability of handcrafted and personalized goods.