Correct spelling for the English word "letted ride" is [lˈɛtɪd ɹˈa͡ɪd], [lˈɛtɪd ɹˈaɪd], [l_ˈɛ_t_ɪ_d ɹ_ˈaɪ_d] (IPA phonetic alphabet).
The phrase "let it ride" or "letted ride" has its origins in the Old English language. The word "let" in Old English meant to allow or permit something. The term "ride" referred to the act of traveling on horseback. Therefore, when someone said "let it ride" or "letted ride", they were essentially giving permission for someone to continue riding or traveling. Over time, this phrase has evolved and now commonly refers to situations where one allows a current situation or decision to remain unchanged.