0 points
I bet there is a German compound one.
Childishandcatastropiclanguageusedbyrationalists doesn’t have that ring to it.
0 points
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I feel like you would use an extended modifier instead: Die kindische und katastrophale von Rationalisten gebrauchte Sprache. Or maybe something like “die kindische und katastrophale Rationalistensprache”. Not sure though. This is pushing the limits of my B1 German though.
2 points
“Rationalistengeschwurbel” seems like it would work well