a scaredy-cat

(informal)

someone who is frightened when there is no reason to be

Usage notes: This phrase is used especially by children.

Go on you scaredy-cat, jump in.

Name	Pronounced	Usage
Gallagher	GAL-ə-gər	Irish, English (Rare)
Xenocrates	zi-NAH-krə-teez (English)	Ancient Greek (Latinized)
Catarina	kah-tah-REE-nah (Italian), ka-ta-REE-na (Galician)	Italian, Portuguese, Occitan, Galician
Chernobog	-	Slavic Mythology
Allard	['æləd]
Prasenjit	-	Bengali