We both of us went on our knees, and, feeling unutterably sad, a whispered prayer went up from our lips as the poor fellow's soul flitted away to a happier and brighter world, and all was over.
Source: wiktionary
Ranked by relevance and common usage.
Keep "unutterably" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Choose a synonym only if it keeps the core idea of "unutterably" intact in the sentence you are editing.
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
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Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
After choosing a replacement for "unutterably", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
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3 total sentences available.
We both of us went on our knees, and, feeling unutterably sad, a whispered prayer went up from our lips as the poor fellow's soul flitted away to a happier and brighter world, and all was over.
Source: wiktionary
I turned away and left her to finish her journey in peace, feeling, but only for a moment or two, that I had been an unutterably mean hound.
Source: wiktionary
The rapid reconquest of the capital, Kabul, by the Taliban after two decades of a staggeringly expensive, bloody effort to establish a secular government with functioning security forces in Afghanistan is, above all, unutterably tragic.
Source: wiktionary
Closest matches include indescribably, inexpressibly, unspeakably, ineffably.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.