慣用音: a reading of a kanji that is commonly accepted, but originally based on a corrupted reading

a normalized kanji reading that falls outside of the conventional categories (呉音 (gōon), 漢音 (kan'on), 唐音 (tō'on)), not showing the expected correspondences to the "correct" Chinese pronunciation recorded in rime dictionaries

not ... at all

even if ...,...cannot

very, exceedingly, awfully / (before a negative form) not at all, at all, by no means

beautiful

(archaic) beautiful

the Japanese language

寛容: tolerant / 肝要: vital

寛容: tolerance / 肝要: vitality / 慣用: customary usage / 涵養: cultivation, fostering / 間葉: mesenchyme / 官用: official use