 100 English synonyms to expand your vocabulary from espressoenglish.net A synonym is a word with the same or a similar meaning as another word. For example, big and large, buy and purchase. Buy is more informal and purchase is more formal. Keep in mind that some synonyms in this lesson might not be perfect synonyms. There may be slight differences in meaning and connotation. For example, the words smart and wise. Both of them mean intelligent, but the word wise also implies that the person has additional good judgment and deep perception about life. Synonyms are often used in different collocations too. For example, we can describe either a person or an idea as brilliant, but only a person can be astute. Powerful, potent, and firm are synonyms for strong. A person with a strong voice can have a powerful voice but not a potent voice. A strong alcoholic drink can be potent but not firm. It's good to look at example sentences with these words. You can do that by visiting sentences.yourdictionary.com Synonyms for smart, bright, sharp, brilliant, astute, wise Synonyms for stupid, dumb, idiotic, dim-witted, slow, dense Synonyms for essential, crucial, critical, vital, integral, indispensable Synonyms for irrelevant, inconsequential, useless, meaningless, trivial, insignificant Synonyms for excellent, magnificent, phenomenal, top-notch, world-class, outstanding Synonyms for acceptable, fitting, suitable, satisfactory, adequate, appropriate Synonyms for awful, horrible, abominable, repulsive, despicable, atrocious Synonyms for interesting, captivating, enchanting, fascinating, enthralling, intriguing Synonyms for boring, dull, tiresome, mundane, humdrum, monotonous Synonyms for uncertain, doubtful, questionable, dubious, far-fetched, unproven Synonyms for new, modern, contemporary, up-to-date, novel, fresh Synonyms for old, outdated, antiquated, obsolete, archaic, old-fashioned Synonyms for easy, simple, child's play, straightforward, effortless, uncomplicated Synonyms for difficult, challenging, daunting, taxing, tough, tricky Synonyms for strong, powerful, intense, firm, solid, potent Synonyms for weak, frail, feeble, shaky, flimsy, fragile Synonyms for huge, colossal, gigantic, astronomical, immense, gargantuan Synonyms for tiny, minuscule, itsy-bitsy, microscopic, dinky, minute Synonyms for many, copious, abundant, numerous, ample, bountiful Synonyms for a bit, smidgen, dash, iota, pinch, shred Synonyms for excess, glut, plethora, wealth, surplus, overabundance If you want to learn more vocabulary, join my Vocabulary Builder course. There are two levels, and you'll learn more than 500 useful and interesting words in each level of the course. Click on the link in the video or in the description for more information.