perplexity
nounUK /pəˈplɛksɪti/ · US /pəɹˈplɛksəti/
Etymology From Middle English perplexite, borrowed from Middle French perplexité or post-classical Latin perplexitās, from perplexus (“entangled”). By surface analysis, perplex + -ity.
1
The state or quality of being perplexed.
2
Something that perplexes.
- The Emperor, who was by then a focus of unresolvable perplexities, stood providing a strongly contrary appearance.1942, Rebecca West, Black Lamb and Grey Falcon, Canongate, published 2006, page 149:
3
Computing, Engineering, Information theory, Mathematics, Natural sciences, Physical sciences, Sciences A measure of the accuracy with which a probability distribution or model predicts a sample.