When it comes to password security, longer is typically better and multi-word pass phrases are even better than that. But if you find yourself with an annoying, fixed-length password, try mixing up the characters in it.
As Reddit user GentleRhino reminds us, tacking on a few extra numbers to the end of some regular words is bad password form. However, mixing those numbers into the words increases complexity.
For example the password "lifehacker1234567890" would take less than two seconds to crack according to Intel's password testing tool here. However, "l1i2f3e4h5a6c7k8e9r0" would take roughly 4,690,072,166 years. While it's not perfect, this trick can help add complexity without making it harder to remember, particularly for password fields that are needlessly limited in length.