Wiktionary
dumbed down
vb. (en-pastdumb down)
Usage examples of "dumbed down".
The stolen TIE was dumbed down technology wise, and the assault shuttle suddenly starts spewing out stormtroopers.
Any ham-handed lurch at the joystick was instantly dumbed down into a gentle, nonlethal veer or dip.
The gun's advanced capabilities had been dumbed down a lot by the gamma pulse, but that suited her just fine.