tomorrowish adjective 1adverb 1forms 2 adjective1 •(informal) Futuristic.I thought it was a very tomorrowish movie. Hitch had once again taken enormous strides with some of his backdrops. — 2013 adverb1 •(informal) Approximately tomorrow.I have to sleep. I'll try to call you tomorrowish. formsmore tomorrowish · most tomorrowish