Uhh, whenever I say "Orthodox", I mean things like believing Trinity, not believing in Universalism, etc.
Let me school you, but in a very kind way. And affirm your strivings into orthodoxy.
The word 'orthodox' means ' belief' or 'right opinion' or 'right teaching' or 'right position'. We should all strive to be 'orthodox' in having true and proper beliefs. Those beliefs usually include believing in the Trinity, in having the traditional view on Christology, a high view of Scripture, and the like. One can be 'orthodox' without being 'Orthodox'. Many Catholics, many Lutherans, many evangelicals can be 'orthodox. I would categorize them all as in some way being 'traditional' in their theology in that they would tend to accept the first several (seven or eight) ecumenical councils of the Church.
The word 'Orthodox' refers to the many Orthodox Churches such as Antiochene Orthodox, Russian Orthodox, Copts, and the like. They have the word 'Orthodox' in their name. And they manage to also be 'orthodox'.
Of course 'orthodox' and 'Orthodox' can be used to describe portions of Judaism as well.
And there are non-religious uses for the word 'orthodox'. One often wants a doctor that practices 'orthodox' medicine, unless such treatments have failed already and one wants a more experimental approach. You get the drift.
Me? I'm orthodox but not Orthodox. I'm a fairly plain garden variety Catholic, believing the creeds and councils, belonging to a universal Church but not at all adhering to universalism. So many labels. Most of them I don't like to use. Like liberal or conservative, neither fit me well politically OR religiously. One label I have been looking at lately is 'Evangelical Catholic', at least in the sense George Weigel uses the term. I might use it of myself, or not, particularly if it seems misleading.