cleaner — A cleaner is someone who is employed to clean the rooms and furniture inside a building.
greener — of the color of growing foliage, between yellow and blue in the spectrum: green leaves.
keener — finely sharpened, as an edge; so shaped as to cut or pierce substances readily: a keen razor.
leaner — the part of flesh that consists of muscle rather than fat.
meaner — occupying a middle position or an intermediate place, as in kind, quality, degree, or time: a mean speed; a mean course; the mean annual rainfall.
rescreen — a movable or fixed device, usually consisting of a covered frame, that provides shelter, serves as a partition, etc.
wiener — Norbert, 1894–1964, U.S. mathematician: pioneer in cybernetics.
Three-syllable rhymes
air cleaner — a filter that prevents dust and other particles from entering the air-intake of an internal-combustion engine
deaner — (in Britain) a shilling or coin in common use before decimalization in 1971
demeanor — Your demeanor is the way you behave, which gives people an impression of your character and feelings.
dry cleaner — a business that dry-cleans garments, draperies, etc.
pipe cleaner — a short length of twisted flexible wires covered with tufted fabric, used to clean the stem of a smoker's pipe and for various handicrafts.
street cleaner — a sanitation worker who cleans streets or sidewalks.
Four-or-more syllable rhymes
intervenor — a person who intervenes, especially in a lawsuit.
misdemeanor — Law. a criminal offense defined as less serious than a felony.
pasadena — a city in SW California, near Los Angeles.
vacuum cleaner — an electrical appliance for cleaning carpets, floors, etc., by suction.