Synonyms for tedium Found 4 synonyms across 2 meanings for “tedium”. the feeling of being bored by something tedious (noun) boredomennui dullness owing to length or slowness (noun) tediousnesstiresomeness Explore Related Words Rhymes with tediumSynonyms for boredomSynonyms for ennuiSynonyms for tediousnessSynonyms for tiresomeness Synonym Finder | Rhyme Finder | Poetry Editor