fraidycat
/ˈfreɪdɪkæt/Definitions
1. noun
A person who is timid, easily frightened, or anxious.
“After being on the rollercoaster, she became a total fraidycat and needed some time to calm down.”
2. adjective
Timid; easily frightened or anxious.
“The fraidycat dog hid under the bed at the sound of the thunderstorm.”