Pattern X里X气 stacks a quality with mild disapproval or affection: 傻里傻气 (silly), 土里土气 (tǔlitǔqì, hick/tacky), 怪里怪气 (guàiliguàiqì, weird). The 里 takes a neutral tone (li) here.
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Colloquial — perfect for teasing a friend, describing a goofy character, or talking about a child's behavior. Not appropriate in formal writing.
