1) Advocacy of monarchical rule 2) Ideology 3) Political orientation 4) Political theory 5) The principles of monarchy 
Monarchism is the advocacy of a monarch or monarchical rule. A monarchist is an individual who supports this form of government, independent from any specific monarch; one who espouses a particular monarch is a royalist. Conversely, the opposition to monarchical rule is sometimes referred to as republicanism. Depending on the county, a monarchist ...
• (n.) The principles of, or preference for, monarchy.
Mon'arch·ism noun The principles of, or preference for, monarchy. 
[n] - a belief in and advocacy of monarchy as a political system
monarchism The principles of monarchical government; attachment to monarchy or the monarchical principle.
noun a belief in and advocacy of monarchy as a political system
the principles of monarchy. · advocacy of monarchical rule.