Ranked by relevance and common usage.
Keep "befoul" 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 "befoul" intact in the sentence you are editing.
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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 "befoul", 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 "befoul" or choose a simpler alternative from the closest-match group.
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18 translations across 10 languages.
9 total sentences available.
These heights are a desirable retreat, for less picturesque reasons—as an escape from a compound of vile smells perpetually arising from a great harbour full of stagnant water, and befouled by the refuse of innumerable ships with all sorts of cargoes: which, in hot weather, is dreadful in the last degree.
Source: wiktionary
1897, Robert Gwynneddon Davies (translator), The Sleeping Bard by Ellis Wynne, London: Simplkon, Marshall & Co., Part I, At last, what with a round of blasphemy, and the whole crowd with clay pistols belching smoke and fire and slander of their neighbours, and the floor already befouled with dregs and spittle, I feared lest viler deeds should happen, and craved to depart.
Source: wiktionary
Only the four walls of his home still stood, blackened and smoking with the sluggish, stinking smoke that befouled the sea-wind.
Source: wiktionary
1997, Ted Hughes, Tales from Ovid, “Echo and Narcissus” in Paul Keegan (ed.), Ted Hughes: Collected Poems, New York: Farrar, Straus and Giroux, 2003, p. 919, There was a pool of perfect water. […] No cattle Had slobbered their muzzles in it And befouled it.
Source: wiktionary
Showing 4 of 9 available sentences.
Closest matches include defile, abuse, afflict, aggrieve, benasty.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.