Correct spelling for the English word "suddenlied" is [sˈʌdənlid], [sˈʌdənlid], [s_ˈʌ_d_ə_n_l_i_d] (IPA phonetic alphabet).
The word "suddenlied" does not have an established etymology, as it appears to be a non-standard or uncommon word. It seems to be a derivative of the adjective "sudden" combined with the suffix "-lied". However, the suffix "-lied" is not recognized as a common or standardized component in English word formation. It is possible that "suddenlied" is a neologism or a creative formation by combining existing words.