Relating to fashion or fashions; characteristic of or influenced by fashion.
From 'fashion' plus the adjective suffix '-al,' a less common formation than 'fashionable,' used more rarely in technical or academic fashion discourse.
'Fashional' is a real word but uncommon because 'fashionable' already does the job—English sometimes creates multiple forms for the same concept and then one becomes dominant while others fade, giving us fascinating glimpses into language change in real time.
Complete word intelligence in one call. Free tier — 50 lookups/day.