Timorous

/ˈtɪmərəs/ adjective medium

Easily frightened, showing fear or a lack of confidence in the face of a challenge.

The timorous new intern hesitated at the doorway before finally knocking.

Memory Trick

Timorous comes from Latin 'timor,' fear -- the same root behind 'timid,' so a timorous person is really just a more formal cousin of timid.