English Dictionary
perplexing
adj : lacking clarity of meaning; causing confusion or perplexity;
"sent confusing signals to Iraq"; "perplexing to
someone who knew nothing about it"; "a puzzling
statement" [syn: {confusing}, {puzzling}]
English Computing Dictionary
perplexity
The {geometric mean} of the number of words which may follow
any given word for a certain {lexicon} and {grammar}.