In Ancient Rome, a dictator was a consul granted temporary powers in times of war. It was a fair extension of the powers of a duly elected official, and didn't carry the harsh or permanent connotations of modern usages. Such stigmas are because of Julius Caesar, who got his dictatorship while not in a state of emergency, and he got it for life. Today, we equate it with similar situations, like that in Equatorial Guinea or North Korea. Anyway, the word dictator comes from Latin dictare, or "to prescribe" (yes, the root of dictate through Latin dictatus) because the Senate would prescribe emergency measures, and because "prescribe" is kinda synonymic with "talk" it all comes from dicere, "to speak". This all traces to (see the post on valedictorian) Proto-Italic deiko, from Proto-Indo-European deik ("to point out")
Adam Aleksic, a leading contender for valedictorian of his high school, is a 210-month-old boy with disturbing interests in etymology, vexillology, geography, and law. Adam would like to one day visit Tajikistan and probably isn't spying for the Kyrgyz government.
The Etymology Nerd