Synonyms for deepen Found 4 synonyms across 2 meanings for “deepen”. make more intense, stronger, or more marked (verb) intensifycompoundheighten become deeper in tone (verb) change Explore Related Words Rhymes with deepenSynonyms for intensifySynonyms for compoundSynonyms for heightenSynonyms for change Synonym Finder | Rhyme Finder | Poetry Editor