Synonyms for workbenchˈwɜrkˌbɛntʃ. This thesaurus page is about all possible synonyms, equivalent, same meaning and similar words for the term workbench. Princeton's WordNet(0.00 / 0 votes)Rate these synonyms: workbench, work bench, bench(noun) a strong worktable for a carpenter or mechanic. Synonyms: judiciary, workbench, work bench, bench, terrace.