We've found 4 phrases for predictable (0.131 seconds):

by-the-numbers »    Done in a predictable manner; formulaic.

Loose cannon »    An uncontrolled or unpredictable person who causes damage to his own friends, faction, political party, etc.

lose the plot »    To cease to be behaving in a predictable and/or rational manner.

on acid »    Exaggerated, bizarre or unpredictable.

BTW, Why won't you become an editor?