ABC Synonyms: 31 Similar and Opposite Words

ABC

noun

ˌā-(ˌ)bē-ˈsē

Definition of ABC

as in principles

usually ABC's or ABCs plural general or basic truths on which other truths or theories can be based a book on the ABCs of computer usage

Synonyms & Similar Words

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Recent Examples of Synonyms for ABC

Noun

Now it’s called H-40, referring to August of this year (H is the eighth letter of the alphabet), and the 40th release overall.

— Jonah Flicker, Robb Report, 6 Nov. 2026
His previous grid played with the NATO alphabet; today’s puzzle has fun with a different writing system.

— Sean McGowan, New York Times, 5 Nov. 2026

Definition of alphabet

Noun

Specifically, the scientists found that a receptor protein in the ventromedial hypothalamus may form the basis for the foxes’ social behavior.

— Mary Randolph, Scientific American, 6 Nov. 2026
Plus, that can impact how the whole institution is run on a day-to-day basis, as Congress has the power to shake up the Smithsonian’s board of regents.

— Nate Freeman, Vanity Fair, 6 Nov. 2026

Definition of basis

Noun

The narrative moves between teenage football players, police officers, and clueless parents, with diary entries, footnotes, photographs, and archival materials at play; you might be reminded of Rejection or Lost Lambs, but with odder grammar.

— Jasmine Vojdani, Vulture, 10 Nov. 2026
Asked how directors can keep AI from flattening their vision, Kim said AI tools can be learned in a few months, while film grammar such as the 180-degree rule, lenses and editing can take years.

— Naman Ramachandran, Variety, 8 Nov. 2026

Definition of grammar

Noun

One of the strongest tests comes from Big Bang nucleosynthesis (BBN), the process through which the first light elements formed during the universe’s first few minutes.

— Rupendra Brahambhatt, Interesting Engineering, 8 Nov. 2026
Evans's passion for golf and the Masters Tournament led them to incorporate elements from Augusta's clubhouse design.

— Condé Nast, Condé Nast Traveler, 6 Nov. 2026

Definition of elements

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“ABC.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ABC. Accessed 13 Nov. 2026.

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Synonyms of ABC

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