Synonyms for append Found 9 synonyms across 3 meanings for “append”. add to the very end (verb) supplementaffix fix to (verb) tack state or say further (verb) addsupply Explore Related Words Rhymes with appendSynonyms for supplementSynonyms for affixSynonyms for tackSynonyms for addSynonyms for supply Synonym Finder | Rhyme Finder | Poetry Editor