Tutoring English, you notice some words have surprising definitions. The tutor mentions rarefied.
I began about rarefied and its allies in my post from Sept 1. Now I continue:rarefied (adj) 1: thin, as a gas can be: present at lower pressure than “normal” because of physical intervention or uncommon location.
2: not of common interest because it’s too academic.
Source:merriam-webster.com Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.