Adjectives & Adverbs
“She is a careful driver” and “she drives carefully” say the same thing about the same person — but one word describes her and the other describes what she does. Learn to hear that difference and the right form picks itself.
Describe the person. Or the action.
Same woman, same skill, two sentences. Switch what you are describing and the word changes shape — except twice, and those two are the ones worth remembering.
Got the difference? Jump to the practice →
The rules — with examples
One question sorts almost every case: is the word describing a thing or an action? Everything else on this page is spelling and a short list of exceptions.
Which word describes what
The room is quiet.
He answered politely.
The two-question test: if you can ask what kind? you need an adjective — “what kind of driver? a careful one”. If you can ask how? you need an adverb — “how does she drive? carefully”. Say the question out loud in your head and the ending follows.
Building an adverb: four spelling rules
Two spellings worth memorizing: true drops its e → truly, and full drops an l → fully. Everything else follows the four rules above.
The exceptions to learn by heart
One more that catches people out: well is also an adjective meaning healthy. “I don’t feel well” is about your health; “I don’t sing well” is about your singing. Same word, two jobs.
Where each word goes
The order of adjectives
Native speakers never learn this list — they just hear when it is wrong. You can learn it directly instead.
You will almost never use more than two or three at once — and two is enough to hear the rule: a big red bus sounds right, “a red big bus” does not.
Quick way to remember it: the adjectives closest to the noun are the facts that are hardest to argue with — what it is made of, where it comes from, what color it is. The further left you go, the more the word is your opinion. Facts hug the noun; opinions sit out front.
When -ly is not an adverb
Quick guide: describing a thing → adjective. Describing an action → adverb, usually + -ly. After be, look, feel, smell, taste → adjective. And learn three pairs cold: good/well, hard/hardly, late/lately.
Practice & score yourself
Ten questions — five multiple choice, five gap-fill. Instant scoring and a short explanation for every answer.
The one rule to remember
Ask what the word is describing. A thing or a person → adjective: a careful driver. An action → adverb, and usually that means adding -ly: she drives carefully. One question, and the ending chooses itself.
Then keep three exceptions in your pocket. Good becomes well, not “goodly”. Hard does not change at all — and hardly is a different word meaning almost never. And after be, look, feel, smell, taste and sound, go back to the adjective: the soup smells delicious, never “deliciously”.
Ready to compare things? Try Comparatives & Superlatives → or turn the volume up with Intensifiers →