1. 物事の進展に軽く不安を感じること(a feeling of mild anxiety about possible developments)
2. 心配と神経過敏の比較的永続する状態で、様々な精神障害で起こり、通常、強迫観念に取り付かれた行動またはパニックの発作を伴う(a relatively permanent state of worry and nervousness occurring in a variety of mental disorders, usually accompanied by compulsive behavior or attacks of panic)