Synonyms for firmly Found 5 synonyms across 3 meanings for “firmly”. with resolute determination (adv) firmsteadfastlyunwaveringly in a secure manner (adv) securely with firmness (adv) hard Explore Related Words Rhymes with firmlySynonyms for firmSynonyms for steadfastlySynonyms for unwaveringlySynonyms for securelySynonyms for hard Synonym Finder | Rhyme Finder | Poetry Editor