noun🔗ShareA state of perplexity or bewilderment."The student was in a complete nonplus when the teacher asked a question about a topic that hadn't been covered in class. "mindsensationsituationconditionChat with AIVocabulary GamePractice Reading
verb🔗ShareTo perplex or bewilder someone; to confound or flummox"The sudden power outage completely nonplussed the student, who didn't know how to save his work. "mindhumanpersonattitudeChat with AIVocabulary GamePractice Reading