Extra and Prototype

Opposite meaning words

Extra noun - An interchangeable part or piece of equipment that is kept on hand for replacement of an original.

Usage example: that portable player runs through batteries incredibly fast, so I always keep plenty of extras on hand

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Prototype is an antonym for extra.

Prototype noun - One of a group or collection that shows what the whole is like.

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Extra is an antonym for prototype.

old	old extra	old prototype
short	short extra	short prototype
regular	regular extra	regular prototype
big	big extra	big prototype
Other adjectives: black, new, mere.

The GM Cannon Test Type is a prototype for mass produced GM Cannon, it is essentially a normal GM with a Guncannon's head and two extra shoulder cannons.

Source: Flawed Prototype
However, these extra systems require the driver to be specially trained, make the tank far too expensive to be mass-produced, and are implied to require a hideous number of man-hours in maintenance (again, with an overseer familiar with the tank's unique systems) so only the prototype model exists.

Source: Crew of One
Though it does add that extra bit of coolness to a Super Prototype, we admit.

Source: "X" Makes Anything Cool

Cite this Source

Prototype and Extra. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/extra/prototype

Extra & Prototype. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/extra/prototype>.

Prototype or Extra. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/extra/prototype.

Google Ngram Viewer shows how "extra" and "prototype" have occurred on timeline