Clue: Hawkish marine, left motherless after accident, has another depression (11)
Answer: ACCIPITRINE
Explanation: Definition: Hawkish
=relating to hawks. [**ma**]RINE="marine, left motherless" or losing a **ma**=mother; after ACCI/PIT=ACCI[**dent**], with PIT instead of **dent** as "another depression"