mumsy adjective 1noun 1forms 3 adjective1 •(informal) Characteristic of a mum; motherly.There is a fine line between being the perfect, considerate hostess and being mumsy – warning signs are making marmalade, bottling fruit, even baking cakes. — 2009 noun1 •Mum, mother.Mumsy had come over to discuss the family party, which she was giving in the form of a Christmas luncheon so the children could come to it. — 1938 formsmumsies · mumsier · mumsiest
