• Too big for (someone's) britches
• Too brattier
• Too clever by half
• Too close for comfort
• Too far to go
• Too good to be true
• Too good to last
• Too late to apologize
• Too little, too late
• Too loud to hear
• Too many
• Too many cooks
• Too many cooks spoil the broth
• Too much of a good thing
• Too much pressure