🇬🇧🇨🇳 contagious - 传染性 : English Lesson

Meaning of "contagious" ("传染性"), detailed definition, and a short video lesson below.

If something is contagious, it can spread quickly from one person (or animal) to another. Germs that cause colds and the flu are contagious, and sometimes feelings like laughter or yawning can be contagious too—one person starts, and soon everyone around them is doing it!

Watch and listen to this English flashcard to understand the word in more detail, with an easy example sentence.

My baby brother’s giggles were so contagious that even the grumpy cat started purring and snorting at the same time.

Our teacher’s yawns were so contagious that by math time the entire class looked like sleepy lions at the zoo.

A contagious fit of laughter exploded at lunch when my spaghetti tried to escape my fork and slapped me in the face.

Grandma’s contagious dancing at the wedding turned the slow song into a wild chicken dance festival.

Laughter can be contagious in real life—scientists found that when you hear someone laugh, your brain gets ready to laugh too.

On the crowded train a child's contagious laugh broke the quiet. One passenger's contagious chuckle caught another; soon the carriage was full of contagious giggles. Even a stern woman gave a contagious smile. A man with a cold tried to hide a contagious cough, but the laughter and warmth made everyone feel less alone, and they all smiled.

This word is at the C2 level, which means it represents the highest mastery of English. It’s often used in specialized or highly formal contexts and helps you communicate with precision and subtlety, much like a native speaker.

Expanding your English vocabulary is one of the best ways to improve your pronunciation, spelling, and confidence in English. Watch the video above to memorize the word, understand its meaning, and see example sentences in action. Discover related words to grow your vocabulary naturally. Add words to your playlist for stress-free, effective learning—anytime, anywhere! Watch, learn, repeat.