| serious(deep, thoughtful, grand, esteemed, reflective) |
| sharp(knowledgeable, cultured, educated, erudite, enlightened) |
| skilled(sound, deep, thoughtful, knowledgeable, cultured) |
| sober-minded |
| solemn(sound, knowledgeable, cultured, educated, erudite) |
| solid(sound, knowledgeable, cultured, educated, erudite) |
| sophistical |
| spiritual(abstract, theoretical, abstruse) |
| studied(sound, knowledgeable, cultured, educated, erudite) |
| subdued(adjective, calm, quiet, gentle, passive) |
| submissive(adjective, calm, quiet, understanding, gentle) |
| subservient(adjective, calm, quiet, gentle, ready) |
| superhuman(abstract, theoretical, abstruse) |
| superior(abstract, theoretical, abstruse) |
| supermundane(abstract, theoretical, abstruse) |
| supernatural(abstract, theoretical, abstruse) |
| suprahuman(abstract, theoretical, abstruse) |
| supramundane(abstract, theoretical, abstruse) |
| supranatural(abstract, theoretical, abstruse) |
| tame(adjective, calm, quiet, gentle, passive) |