• controversial ⪢⪢
When the book, The Origin of Species, was published in 1859, it was very popular and very _____ .
http://qindex.info/i.php?x=16384

○○○ Douglas MacArthur ⪢⪢
General _____ is one of the most notable and controversial military figures America has ever produced.
http://qindex.info/i.php?x=24171

○○○ speculative ⪢⪢
It's important to note that the concept of the singularity is highly _____ and controversial. ￫ speculate
http://qindex.info/i.php?x=28762

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