unquestionably

/ʌnˈkwestʃənəbli/
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without question; "Fred Winter is unquestionably the jockey to follow" "they hired unimpeachably first-rate faculty members"

adverb [疑问副词] 无可非议地;确凿地,肯定地

It was unquestionably a step in the right direction. 这无疑是朝正确方向迈出的一步。

后缀: ably 【adverb】 以某种方式(特征、能力)地 - in a manner of being 原词: unquestionably 是通过后缀 【ably】 构成的派生词
单词造句:
网友用 “Unquestionably” 造句精选
Now, this thing had actually and unquestionably failed. 现在,它实际上毫无疑问地失败了。