The assignment was very difficult, requiring hours of tedious work.
Source: tatoeba (1750005)
Ranked by relevance and common usage.
Keep "requiring" 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 "requiring" 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 "requiring", 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 "requiring" 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.
11 total sentences available.
The assignment was very difficult, requiring hours of tedious work.
Source: tatoeba (1750005)
Ordering from catalogs saves you time and money without requiring you to leave the house.
Source: tatoeba (2057133)
As surgeons keep their instruments and knives always at hand for cases requiring immediate treatment, so shouldst thou have thy thoughts ready to understand things divine and human.
Source: tatoeba (6203116)
If the teacher is to plan out a vacation or something similar requiring one to compare prices and figure out what it would cost, it is the pupils' skills he would exploit. Sometimes, the wife may be wishing for a new fruit bowl, or perhaps the husband is looking for a new letter opener. Many have sons that require a short bedside story or daughters with dolls that must be clad in clothing of utmost fashionability; all this, the teacher makes the pupils make for him.
Source: tatoeba (6442810)
Showing 4 of 11 available sentences.
Closest matches include demand, entailing, gerund, impose, mandating.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.