"Faddishly" is an adjective that describes something that is trendy or fashionable, often characterized by a short-lived popularity. Some synonyms for "faddishly" include "trendily," "stylishly," or "fashionably," which all convey a similar sense of being in vogue or following the current fashion. Other synonyms include "fad-like," "fashionable," and "currently popular," which suggest a transient nature. "In vogue," "popular," or "trendy" are also synonyms for "faddishly," emphasizing a current trend or fashion. Some antonyms for "faddishly" include "timeless," "classic," or "enduring," which imply a long-lasting appeal that is not subject to changing trends.