be as honest as the day

be as honest as the day (is long)

to be completely honest You can be as honest as the day is long and still get into trouble if you fill in your tax form incorrectly.

Name	Pronounced	Usage
VavŘInec	-	Czech
Nuno	-	Portuguese, Medieval Portuguese
Nabu	-	Near Eastern Mythology
Emer	EE-mur	Irish, Irish Mythology
Valentinianus	-	Ancient Roman
Rue	ROO	English