Is “Perplexity” a Scrabble word?
Yes
PERPLEXITY
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Perplexity
/pəˈplɛksɪti/
noun
1.The state or quality of being perplexed; puzzled or confused.
2.Something that perplexes.
3.In information theory, a measurement of how well a probability distribution or model predicts a sample.