| apprehensive(adjective, modest, nervous, humble, hesitant) |
| conscious(adjective, modest, nervous, humble, hesitant) |
| fearful(adjective, modest, nervous, humble, hesitant) |
| introvert(adjective, modest, nervous, humble, hesitant) |
| introverted(adjective, modest, nervous, humble, hesitant) |
| loner(adjective, modest, nervous, humble, hesitant) |
| recessive(adjective, modest, nervous, humble, hesitant) |
| shamefaced(adjective, modest, nervous, humble, hesitant) |
| shy |
| unassertive(adjective, modest, nervous, humble, hesitant) |
| unassured(adjective, modest, nervous, humble, hesitant) |
| uneager(adjective, modest, nervous, humble, hesitant) |
| unsocial(adjective, modest, nervous, humble, hesitant) |
| afraid(adjective, modest, humble, hesitant, suspicious) |
| averse(adjective, modest, humble, hesitant, suspicious) |
| backward(adjective, modest, humble, hesitant, suspicious) |
| bashful(adjective, modest, humble, hesitant, suspicious) |
| cautious(adjective, modest, humble, hesitant, suspicious) |
| chary(adjective, modest, humble, hesitant, suspicious) |
| circumspect(adjective, modest, humble, hesitant, suspicious) |