Having endeavoured to force upon himself the belief of a system against which reason revolts, he ungratefully calls it human reason, as if man could give reason to himself.
Source: tatoeba (1530091)
Ranked by relevance and common usage.
Keep "ungratefully" 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 "ungratefully" intact in the sentence you are editing.
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
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 "ungratefully", 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.
If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "ungratefully" or choose a simpler alternative from the closest-match group.
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4 total sentences available.
Having endeavoured to force upon himself the belief of a system against which reason revolts, he ungratefully calls it human reason, as if man could give reason to himself.
Source: tatoeba (1530091)
I could not repress a keen thrill of sympathy for the child, whoever it was, whose only Christmas was to watch, in cold and storm, the rich banquet ungratefully enjoyed by the lonely bachelor.
Source: tatoeba (5685546)
Nothing happened except a bad headache, and a quarrel with her mother, who was ungratefully inclined to be sarcastic at her expense.
Source: tatoeba (11791550)
Still, in the very fullest blaze of gospel light, while we see that both Christ and His work are most ungratefully and flagrantly dishonoured, by our persistings in the attempt to do for ourselves what He has told us we cannot do, […]
Source: wiktionary
Closest matches include thanklessly, unappreciatively, ungraciously.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.