| hereditary(adjective, intrinsicality) |
| hidden(adjective, individual, original, basic, fundamental) |
| in-depth(adjective, intimate, secret, private, penetrating) |
| indigenous(adjective, characteristic, reasonable, ordinary, natural) |
| inherited(adjective, intrinsicality) |
| innermost(adjective, intimate, secret, private, penetrating) |
| intuitive(adjective, reasonable, natural, private, mental) |
| keystone(noun, support, action, base, importance) |
| minimal(adjective, simple, trifling, understated, negligible) |
| monolithic(adjective, pure) |
| most importantly |
| nitty-gritty(noun, adjective, important, critical, essence) |
| normal(adjective, characteristic, reasonable, common, ordinary) |
| obligation(noun, right, want, need, certainty) |
| part and parcel(noun, expression, idiom, drop, part) |
| penetrating(adjective, intimate, secret, private, personal) |
| privy(adjective, intimate, secret, private, penetrating) |
| quintessence(noun, basic, necessity, intrinsicality) |
| trusted(adjective, intimate, secret, private, penetrating) |
| unadorned(adjective, hard, severe, pure, cold) |