challenging /ˈt͡ʃæl.ɪn.d͡ʒɪŋ/adjective 1noun 1forms 3 adjective1 •Difficult, hard to do. noun1 •The act of making a challenge.There are always sincere challengings of the findings, always the objections (sincere in another sense) of those whose interests seem threatened. — 1918 formschallengings · more challenging · most challenging
