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.

"If a cancer cell is very good at fixing that damage, it can survive treatment and keep growing."

From Science Daily • May 17, 2026

"If you're not good at something, you need to get better," she says matter-of-factly.

From BBC • May 15, 2026

A plant sitter who eats her clients’ plants while insisting she’s very good at her job.

From Los Angeles Times • May 14, 2026

You are so good at playing Americans, I often forget you’re Welsh.

From The Wall Street Journal • May 11, 2026

“There are too many! But I am good at counting!”

From "Across So Many Seas" by Ruth Behar