Word parts clean + -er Pronunciation (US) IPA (key): /ˈkli.nɚ/ (UK) IPA (key): /ˈkliː.nə/ Audio (UK)(file) Noun Singular cleaner Plural cleaners (countable) A cleaner is a person whose job is to cleans houses or buildings. Synonym: janitor A cleaner is a machine for cleaning things. A cleaner is a substance for cleaning things. The cleaner's or cleaners is a shop where you take certain clothes to be cleaned. Adjective Positive clean Comparative cleaner Superlative cleanest The comparative form of clean; more clean. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads