unintermittingly en · ADV
Etymology
From un- + intermittingly.
Meanings
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(not-comparable) Without intermissions; uninterruptedly.
I began a scream that lasted unintermittingly the whole time of the incision – and I almost marvel that it rings not in my Ears still! so excruciating was the agony.
1812, Frances Burney, Journals and Letters, Penguin, published 2001, page 442: