The term "in tendance" refers to something that is currently popular or in vogue. Its antonyms include words like out-dated, unfashionable, outmoded, unpopular, and obsolete. These words describe items, ideas, or trends that are no longer relevant or have fallen out of favor with the mainstream population. In contrast to "in tendance," these antonyms suggest something that is passe or irrelevant in the current milieu. When referring to fashion or style, the antonyms for "in tendance" may also include retro, classic, vintage, or timeless, which suggest enduring styles that hail from a bygone era.