Synonyms and related words :
Sophia, abstruseness, abyss, acumen, ampleness, astuteness, bigness, bottomlessness, broad-mindedness, broadness, capaciousness, complexity, complication, comprehensiveness, copiousness, crabbedness, crampedness, deep-downness, deep-rootedness, deep-seatedness, deepness, depth, difficulty, discernment, erudition, esoterica, expansiveness, extensiveness, extreme innerness, fathomlessness, generousness, good understanding, grandeur, grandiosity, grandness, greatness, hardness, incomprehensibility, indecipherability, inscrutability, interiority, intricacy, involvement, keenness, knottiness, knowledgeability, largeness, mellow wisdom, obscurity, plumblessness, profoundness, reconditeness, ripe wisdom, sagacity, sageness, sapience, scholarliness, scholarship, seasoned understanding, sharpness, sound understanding, spaciousness, subterraneity, subtlety, tallness, wideness, wisdom, wiseness