The beginning of a bold idiom

The four-character idioms that begin with courage are: bold, fearful, brave, fearful, timid, timid, fearful, fearful, fearful, timid, timid, timid, timid.

As timid as a mouse: as timid as a mouse, it is described as very timid.

Boldness: describes great courage.

Bold and cautious: describes decisive and thoughtful.

Boldness: describes doing bad things without restraint.