Why is the word "democracy" not in the preamble of the US Constitution?

The republican is the only form of government which is not eternally at open or secret war with the rights of mankind.

Why? Try these on for size:

Meanwhile, when the Democratic Party formed in 1828, it was with a Tory outlook keen on robbing others of their rights:

My wife has a bunch of really attractive friends, and she expects me to never say anything to her about how beautiful they are. Does this seem fair? I love my wife, and just commenting shouldn’t hurt anything, right?

Another tendency, which is extremely natural to democratic nations and extremely dangerous, is that which leads them to despise and undervalue the rights of private persons.

—Alexis de Tocqueville

—John Adams

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To blacks: “You can’t drink from that water fountain… eat in this cafeteria… ride this bus… go to this school. We voted fair and square and your side lost.

When the people find they can vote themselves money, that will herald the end of the republic.

Majority-rules democracy is the way that majorities run roughshod over minorities, destroying rights and all ideas of equality under the law. No fair-minded person wants anything to do with democracy.

What is unattractive about a nice guy? Why do some women don’t choose nice guys?

To slaves: “You can forget your notions of freedom. We voted fair and square and your side lost.”

In other words, our Founding Fathers and other Whig intellects of that time well understood that democratic methods are the surefire means to do serious damage to the rights guaranteed under republican self-government.

To Indians: “Pack up what belongings you can carry and start walking to Oklahoma. Your fertile lands are ours now. We voted fair and square and your side lost.”

Why is pure dopamine not a recreational drug? And if it was wouldn’t it be the most addictive and fairly side effect free?

—Thomas Jefferson

—Benjamin Franklin

[with republicanism being the rights-protecting form of governance afforded us by our Constitution]

Why are white men so obsessed with Asian women? I'm friends with people from all different backgrounds but I never see my other non-white male friends obsess over or talk about Asian women like I've seen the white ones do.

I do not say that democracy has been more pernicious on the whole, and in the long run, than monarchy or aristocracy. Democracy has never been and never can be so durable as aristocracy or monarchy; but while it lasts, it is more bloody than either.