The phrase "haddest it good" is an old-fashioned way of saying that someone has had a comfortable life. There are several synonyms that can be used instead of this phrase to convey the same meaning. Some of the common synonyms for "haddest it good" include "led a comfortable life," "been privileged," "lived a life of luxury," "enjoyed a comfortable lifestyle," and "had a life of ease." These synonyms can be used interchangeably to describe someone who has had an easy and comfortable life, without facing many difficulties or challenges.