| impervious(adjective, unresponsive, unyielding, unbending, unable) |
| modest(adjective, simple, clean, honest, plain) |
| spontaneous(adjective, simple, easy, honest, plain) |
| uninfluenced(adjective, neutral, independent, unbiased, unmoved) |
| insensitive(adjective, hard, temper, careless, cold) |
| unresponsive(adjective, hard, careless, cold, indifferent) |
| bona fide(expression, adjective, idiom, open, honest) |
| chaste(adjective, quiet, simple, taste, delicate) |
| elegant(quiet, simple, taste, pure, innocent) |
| familiar(adjective, open, simple, informal, ordinary) |
| informal(adjective, open, simple, ordinary, natural) |
| rustic(adjective, open, simple, easy, clean) |
| trusting(adjective, calm, open, simple, easy) |
| cold(adjective, hard, tough, attitude, temper) |
| callous(adjective, hard, cold, indifferent, cruel) |
| calm(adjective, cool, tough, informal, relaxed) |
| casual(adjective, unmoved, unchanged) |
| dispassionate(adjective, cold, indifferent, detached, blank) |
| folksy(adjective, open, simple, clean, honest) |
| forthright(adjective, calm, open, simple, honest) |