curiouser and curiouser UK /ˌkjʊəɹɪəsə n̩ ˈkjʊəɹɪəsə/US /ˌkjʊɹiəsɚ n̩ ˈkjʊɹiəsɚ/ phrase1 •Used to describe or react to an increasingly mysterious or peculiar situation.Greco-German ‘Fingergate’ Gets Curiouser and Curiouser [title] — 2015