From the base of G4628; {warped} that {is} winding; figuratively perverse: - {crooked} {froward} untoward.
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Matrix
Act 19:9But when divers were hardenedG4645, and believed not, but spake evil of that way before the multitude, he departed from them, and separated the disciples, disputing daily in the school of one Tyrannus.
Heb 4:7Again, he limiteth a certain day, saying in David, To day, after so long a time; as it is said, To day if ye will hear his voice, hardenG4645 not your hearts.