ceremoniously的意思好矛盾

查词典时发现ceremoniously的意思好矛盾：

《牛津高阶》（第10版英汉双解）的讲解是：

ceremoniously adverb

in a very polite and formal way  粗鲁无礼；不拘礼节；随意

但《collins双解词典》的讲解却是：

ceremoniously

ADV 副词  极其合法地；隆重地 If someone doessomething ceremoniously, they do it in an extremely formal way.

《牛津高阶》（第10版英汉双解）的讲解是：

ceremoniously adverb

in a very polite and formalway  粗鲁无礼；不拘礼节；随意

这不明显是翻译问题。