| that cannot be subdued or overcome, as persons, will, or courage; unconquerable |
| immature or inexperienced: |
idiosyncrasy id·i·o·syn·cra·sy (ĭd'ē-ō-sĭng'krə-sē)
n.
A structural or behavioral trait peculiar to an individual or a group.
A physiological or temperamental peculiarity.
An unusual individual reaction to food or a drug.