-algia: Pain! Pain! Pain!
This common medical suffix comes from the Greek algos which means… you guessed it: pain. “Neuralgia” is thus pain in one or more nerves; “myalgia” is muscular pain; and “proctalgia” is thus a pain in the ass. I am not kidding. This is an actual condition. Next time someone annoys you, you can call him or her a “proctalgia”. This insult works especially well if you wear a monocle and use hansoms to get around.