The everyday word is 啰嗦 (also written 啰唆), 'long-winded, verbose'. 啰 also transliterates 'lo' in brand names like 哈啰 (Hellobike). An older reading luó survives only in the archaic 啰唣 ('to make a racket').
Left mouth radical 口. For the luō reading it fits literally: 啰嗦 is talk pouring out of the mouth on and on. The same radical anchors speech and sound characters across the dictionary.
Right phonetic 罗 gives the luō sound closely (just a tone shift). It pictures a hand-net for birds and contributes no meaning here. The same phonetic drives 萝, 锣, and 箩.
