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Dictionary.com

good at

ADJECTIVE
efficient
Synonyms
STRONGEST
able active adept adequate capable competent decisive dynamic economical effective energetic potent powerful productive profitable skilled skillful tough useful valuable
WEAK
accomplished adapted apt businesslike clever conducive deft economic effectual efficacious equal to experienced expert familiar with fitted good for handy masterly organized practiced proficient qualified ready saving shrewd systematic talented virtuous well-organized
Antonyms
STRONGEST
delicate fragile idle impotent inactive inadequate incapable incompetent ineffective inept lazy sluggish unable unskilled unskillful useless weak worthless
WEAK
helpless inefficient powerless

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“He really was very good at being thoughtful and careful and not particularly conspicuous,” said Laurence Tribe, who taught Roberts constitutional law at Harvard.

From Slate • May 7, 2026

It was as a fourth-grade participant at the same event nearly 20 years ago that Brown discovered she loved to run — and also that she was very good at it.

From Los Angeles Times • May 4, 2026

Cybersecurity experts said Mythos and cutting-edge AI models from OpenAI and Alphabet’s Google are becoming so good at finding and exploiting bugs that they could make it easier for people to launch cyberattacks.

From The Wall Street Journal • Apr. 30, 2026

They’re extremely good at guessing, especially with the most advanced models.

From Barron's • Apr. 29, 2026

LaVerne said that Boomer was smart and good at sports—but not stuck up about it—and friendly, and two or three other normal things.

From "The Best School Year Ever" by Barbara Robinson