平ひらたく言いえば

expression

in plain words; put simply; to put it plainly

Used to rephrase something in simpler or more direct terms, often as a sentence-initial adverbial phrase.

• 平ひらたく言いえば、それは無む理りだということだ。

  Put simply, it means it's impossible.

• 平ひらたく言いえば、彼かれは怒おこっているんだ。

  In plain words, he's angry.