Not clear; indistinct: a fuzzy recollection of past events. (adjective)
Not coherent; confused: a fuzzy plan of action. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "fuzzy" in a sentence
"My recipe for a defence review would be to adopt a much more 'fuzzy' approach (after the term fuzzy logic)."
"The changes are being driven by students 'lagging performance on international tests and mathematicians' warnings that more than a decade of so-called reform math — critics call it fuzzy math — has crippled students with its de-emphasizing of basic drills and memorization in favor of allowing children to find their own ways to solve problems."
"This also enables what you call fuzzy, but my guess it's just an evolutionarily approach to handle new or defect brain regions / layers."