つゆいささかも

Meanings

1

never; by no means; not in the least

usually written using kana alone

Emphatic negative adverb used with a negative verb. Stronger than 少しも or 決して. Literary and somewhat old-fashioned.

彼かれの言こと葉ばをつゆいささかも疑うたがわなかった。
I never doubted his words in the slightest.
その知しらせを聞きいても、つゆいささかも驚おどろかなかった。
Even hearing that news, I was not surprised in the least.