Ranked by relevance and common usage.
Keep "dunderheaded" 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 "dunderheaded" 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 "dunderheaded", 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 "dunderheaded" or choose a simpler alternative from the closest-match group.
4 total sentences available.
Much nearer sixty years of age than fifty, with a flowing outline of stomach, and horizontal creases in his waistcoat; reputed to be rich; voting at elections in the strictly respectable interest; morally satisfied that nothing but he himself has grown since he was a baby; how can dunder-headed Mr. Sapsea be otherwise than a credit to Cloisterham, and society?
Source: wiktionary
He knew all about it, dammit! It was no pleasure for him to have the thing shoved down his neck by every dunderheaded pumpkin-faced noodle in the universe!
Source: wiktionary
He went doggedly across the fields with his terrier, and looked at everything with a jaundiced eye. . . . [W]as he a dunderheaded baby, not man enough to be like the other young fellows who drank a good deal and wenched a little without any question, and were satisfied?
Source: wiktionary
The best way to see Hell's Highway, which opens today in Manhattan, might be on a double bill with 2 Fast 2 Furious. Yes, one is a scholarly documentary and the other a dunderheaded action picture, but both, in their different ways, offer testimony to the love affair between the movie camera and the automobile
Source: wiktionary
Closest matches include blockheaded, blunderheaded, knuckleheaded, muttonheaded, nitwitted.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.