This document defines 9 words: Aggressive, Detect, Dubiously, Frustration, Imprinted, Materialize, Migration, Secretive, and Tolerated. It provides short definitions or explanations of each word's meaning.

1. When Crowbar Came

2. Aggressive Taking the first step in an attack

3. Detect Discover or find out

4. Dubiously Uncertainly; filled with doubt

5. Frustration A feeling of helplessness or anger caused by failure

6. Imprinted Learned as a baby animal to identify and follow a parent

7. Materialize Appear or suddenly be seen

8. Migration The act of going from one region to another with the change in seasons

9. Secretive Having the habit of secrecy; not frank or open

10. Tolerated Allowed or permitted