Her knees trembled, her heart fluttered, a horrible faintness came over her.
Source: tatoeba (5838168)
Ranked by relevance and common usage.
Keep "faintness" 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 "faintness" 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 "faintness", 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 "faintness" or choose a simpler alternative from the closest-match group.
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
Showing 16 of 18 words.
6 total sentences available.
Her knees trembled, her heart fluttered, a horrible faintness came over her.
Source: tatoeba (5838168)
Then a faintness came over her; she recalled the Viscount who had waltzed with her at the chateau, and his beard exhaled like this air an odour of vanilla and citron, and mechanically she half-closed her eyes the better to breathe it in.
Source: tatoeba (11945545)
And he first took exceptions at this badge, / Pronouncing that the paleness of this flower / Bewray'd the faintness of my master's heart.
Source: wiktionary
The confusion, in which impressions are sometimes involved, proceeds only from their faintness and unsteadiness, not from any capacity in the mind to receive any impression, which in its real existence has no particular degree nor proportion.
Source: wiktionary
Showing 4 of 6 available sentences.
Closest matches include dimness, abulia, anemia, atony, blah feeling.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.