Synonyms of add-on

add-on

noun

ˈad-ˌän 

as in option

something that is not necessary in itself but adds to the convenience or performance of the main piece of equipment

a blow-dryer that comes with a couple of add-ons for people who are serious about styling their hair

Synonyms & Similar Words

• option
• accessory
• appliance
• adapter
• appendage
• adjunct
• attachment
• additive
• equipment
• enhancement
• accoutrement
• accompaniment
• complement
• amenity
• supplement
• subsidiary
• filler
• auxiliary
• furnishings
• extra
• incidental
• luxury
• ornament
• trappings
• embroidery
• adornment
• decoration
• trimming
• appurtenances
• embellishment
• garnish
• paraphernalia
• frill
• nonessential
• trim
• habiliment(s)
• nonnecessity
• doodad
• bells and whistles

Antonyms & Near Antonyms

• essential
• requirement
• necessity
• requisite

Example Sentences

Recent Examples of add-on

For most healthy, average-risk adults, it is not recommended and is best viewed as an optional add-on examination, because the long-term benefits are uncertain. — Maggie O'Neill, Verywell Health, 11 Aug. 2026

Cove sent me a full array of add-ons, including indoor and outdoor cameras, a doorbell camera, a smoke detector, a carbon monoxide (CO) detector, a panic button, a glass-break sensor, a water-leak sensor, a siren, and a remote fob. — John R. Delaney, PC Magazine, 10 Aug. 2026

Nautical North, Cheboygan, Michigan (Lake Huron) Nautical North’s Shipwreck Tour threads past four lighthouses and three wrecks on the Cheboygan River, with a snorkeling add-on and sunset cruises that light the wrecks up after dark. — Stacy Conde, Midwest Living, 10 Aug. 2026

The company will no longer try to advance the drug, called SION-719, as an add-on therapy for CF patients. — Jason Mast, STAT, 10 Aug. 2026