| second-nature(adjective, inside, instinctive, interior, automatic) |
| straightforward(adjective, open, direct, free, simple) |
| unthinking(adjective, instinctive, gut, automatic, intuitive) |
| frank(adjective, open, free, simple, easy) |
| constitutional(adjective, start, complete, basic, instinctive) |
| informal(adjective, adverb, calm, open, smooth) |
| unpremeditated(adjective, impulse, instinctive, automatic, involuntary) |
| unpretentious(adjective, calm, open, smooth, simple) |
| casual(adjective, adverb, calm, open, smooth) |
| characteristic(adjective, simple, common, ordinary, familiar) |
| innocent(adjective, open, smooth, simple, friendly) |
| unfeigned(adjective, open, correct, right, honest) |
| unlearned(adjective, simple, crude, ignorant, unsophisticated) |
| unstudied(adjective, open, simple, reasonable, clean) |
| authentic(adjective, simple, correct, right, bright) |
| conventional(adjective, characteristic, simple, pure, common) |
| deep-seated(adjective, characteristic, essential, basic, instinctive) |
| easygoing(adjective, calm, simple, plain, informal) |
| everyday(adjective, characteristic, simple, informal, pure) |
| faithful(adjective, open, honest, true, straightforward) |