NIV : every inclination of the thoughts of his heart is only evil all the time.
ESV : every intention of the thoughts of his heart was only evil continually.
NKJ : every intent of the thoughts of his heart was only evil continually.
NRS : every inclination of the thoughts of their hearts was only evil continually.
RSV : every imagination of the thoughts of his heart was only evil continually.
NASB : every intent of the thoughts of his heart was only evil continually.
KJV/AB : every imagination of the thoughts of his heart was only evil continually.