Did you know?

Click any word in a definition or example to find the entry for that word

Someone who is intelligent or well informed

artful dodger

noun

someone who is clever and manages to get out of difficult situations and avoid answering questions

boffin

noun

someone who is very intelligent and knows a lot about a particular subject

brain

noun

an intelligent person

brain box

noun

an extremely intelligent person

clever clogs

noun

someone who is annoying because they are always right or because they think they are more intelligent than everyone else

egghead

noun

someone who has a lot of knowledge and intelligence and is only interested in academic subjects

genius

noun

someone who is much more intelligent or skilful than other people

intellect

noun

someone who is extremely intelligent

mamba

noun

someone who is extremely clever or skilful

Mensa

an international organization for people who have achieved a high score in an intelligence test

mind

noun

someone who is very intelligent

polymath

noun

someone who has a lot of knowledge about many different subjects

sage

noun

someone who is wise and shows good judgment

savant

noun

someone who has a lot of knowledge

smart money

noun

people who have a lot of knowledge about something and whose opinions are respected

tactician

noun

someone who uses clever methods in order to achieve something

thinker

noun

someone who thinks about important subjects and develops new ideas, especially someone who is well known for this

thinker

noun

someone who thinks carefully about things and is good at academic subjects

walking encyclopedia

noun

someone who has a lot of knowledge

whizkid

another spelling of whizzkid

whizzkid

noun

a young person who is very intelligent or very successful

a bright spark

someone who is clever or who has a clever idea. This word is usually used for showing that you think someone is stupid

a fount of knowledge/wisdom/advice/ideas etc

a person, organization, book etc that provides a lot of information, advice, or ideas

a walking encyclopedia

someone who knows a lot about many different things

tough/smart cookie

someone who has a strong character or is intelligent, and deals well with problems and disappointments

the brains of something

the most intelligent person involved in something

dark pool

a method of financial trading in which share prices are hidden and not openly available to the public

BuzzWord Article

Word of the Day

spinnaker

an extra sail sometimes fitted on the front of a boat used for racing

Open Dictionary

subtweet

to post a tweet, usually a negative one, that mentions a person without using the @ sign, so that they will not see the message on their Twitter feed …

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog