Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun add-on

2 senses of add-on

Sense 1
addition, add-on, improver -- (a component that is added to something to improve it; "the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor")
       => component, constituent, element -- (an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system; "spare components for cars"; "a component or constituent element of a system")

Sense 2
accessory, appurtenance, supplement, add-on -- (a supplementary component that improves capability)
       => component, constituent, element -- (an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system; "spare components for cars"; "a component or constituent element of a system")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb add-on

2 senses of add on

Sense 1
add on -- (make an addition; "Let's add on to this")
       => add -- (make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of; "We added two students to that dorm room"; "She added a personal note to her letter"; "Add insult to injury"; "Add some extra plates to the dinner table")

Sense 2
append, add on, supplement, affix -- (add to the very end; "He appended a glossary to his novel where he used an invented language")
       => attach -- (cause to be attached)

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