Gustavian adjective 1noun 1forms 3 adjective1 •Pertaining to the era of King Gustav III of Sweden, e.g. its furniture style, and to the Gustavians.A Gustavian clock ticktocked on the carved marble mantelpiece. — 2017 noun1 •(historical) A loyalist supporting King Gustav III of Sweden. formsGustavians · more Gustavian · most Gustavian
