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

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

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.

Why? Try these on for size:

Is anyone else losing complete respect for the US at this point?

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.”

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

—Thomas Jefferson

Astronomers simulate a star's final moments as it's swallowed by a black hole: 'Breaks like an egg' - Space

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

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.

—Alexis de Tocqueville

Is Florida now unsurvivable because it's an oven due to climate change? It's 11:48 am on May 30th and the heat index in SoFla is 100. I can see it going up to over 130 by July.

—Benjamin Franklin

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.

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.

Fans slam Gearbox CEO Randy Pitchford's message to "cost sensitive" fans - Eurogamer

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

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

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.

Why are people so rude to debt collector’s? I am one and I am so tired of being mistreated. We are under paid and then have to deal with the most ungrateful, and disrespectful people. We aren’t customer service. Don’t get mad at us because YOU owe.

—John Adams