Pronunciation: [lˈiːvd stɹˈe͡ɪt and nˈaɹə͡ʊ] (IPA) 
The correct spelling of the phrase "leaved straight and narrow" is in fact "lived on the straight and narrow." This phrase refers to someone who is living a life of honesty and morality. The incorrect spelling may be due to the similarity in pronunciation between the words "lived" and "leaved." The phonetic transcription of the correct spelling is /lɪvd ɒn ðə streɪt ən 'nærəʊ/.
"Leaved straight and narrow" is a phrase that combines two separate idioms: "leaved" and "straight and narrow."
The term "leaved" typically refers to the presence of leaves on a plant or tree. In this context, however, it is used figuratively to depict a deviation or departure from the conventional path or expected course of action. It suggests that an individual or entity has moved away from their original purpose, principles, or core values, potentially embracing a different direction, belief system, or set of behaviors.
On the other hand, the idiom "straight and narrow" is rooted in religious and moral connotations. It implies a righteous and virtuous way of life, strictly adhering to societal norms and moral codes. The phrase often denotes living a life of integrity, avoiding temptations, and staying on the path of righteousness.
When combined, "leaved straight and narrow" characterizes an individual or entity that has strayed away from their previous virtuous or righteous path. It indicates a deviation from moral conduct, ethical standards, or the expected course of action. It suggests that the subject has forsaken their original principles or values, perhaps embracing a different path that may be considered contradictory to their previous beliefs or societal expectations.
Overall, "leaved straight and narrow" portrays a departure from the traditional path of righteousness and adherence to moral norms, implying a change in behavior, principles, or values.
