| eternal(abstract, theoretical, abstruse) |
| existential |
| experienced(grand, knowledgeable, cultured, educated, erudite) |
| expert(knowledgeable, cultured, educated, erudite, enlightened) |
| forgiving(adjective, calm, quiet, understanding, gentle) |
| fundamental(adjective, supernatural, abstract, spiritual, theoretical) |
| grave(sound, thoughtful, grand, knowledgeable, cultured) |
| grounded(knowledgeable, cultured, educated, erudite, enlightened) |
| high-flown(abstract, theoretical, abstruse) |
| highbrow(knowledgeable, cultured, educated, erudite, enlightened) |
| ideal(intellectual, abstract, theoretical, abstruse, academic) |
| immaterial(intellectual, abstract, theoretical, abstruse, nonconcrete) |
| impalpable(abstract, theoretical, abstruse) |
| in the know(expression, idiom, sound, knowledgeable, cultured) |
| incorporeal(abstract, theoretical, abstruse) |
| insubstantial(abstract, theoretical, abstruse) |
| intangible(intellectual, abstract, theoretical, abstruse, nonconcrete) |
| jesuitic(abstract, theoretical, abstruse) |
| lettered(knowledgeable, cultured, educated, erudite, enlightened) |
| level headed |