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

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.

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

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.

When a black man and a white woman have a child, does the child become white? If a white man and a black woman have a child, does the child become black?

—Benjamin Franklin

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

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.

Which country has the best and strictest legal system in the world?

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:

—Thomas Jefferson

A Mistake Led to the Discovery of an Underwater Island Full of Rare Earth Elements - The Daily Galaxy

—John Adams

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.

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.”

'Happy Days' star Henry Winkler took Marlee Matlin in after difficult relationship with William Hurt - AOL.com

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

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.

—Alexis de Tocqueville

Is it common for Americans to feel "trapped" due to the size and distance of their country from other countries/continents? Is this feeling an exaggeration or a reality?

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