You already know what a majuscule is, even if you don’t know the name of it. In fact, I’ve used three majuscules in this post already. Go back and have a look, and see if you can find them (that’s four now).
OK, I’ll stop being a smart-arse now. A majuscule is just an upper-case (or large) letter, or script in which every letter is the same size. It was first used in 1722, and comes from the Latin word ‘majusculus’ which simply means ‘rather large’. So not ‘really large’ – just ‘rather’.
You can also use majuscule as an adjective to describe things that are rather large (stop it) e.g. ‘that’s a majuscular carrot’ or ‘I’ve made a majuscular mistake’. No one will know what you mean though (except me).
You’ve probably guessed that the opposite of ‘majuscule’ is ‘miniscule’. Originally ‘miniscule’ was only used to describe lower-case letters in printing. But while it’s since evolved to describe anything that’s ickle, poor old majuscule got left behind. Shame.
Majuscule scripts are actually harder for us humans to read. That’s because we use the up-and-downness (yes, that is the technical term) of upper and lower-case letters to help us recognise words. So when people capitalise things (like headings) because they want to make them look more IMPORTANT, they’re actually making them harder to read (and they look like they’re shouting). So only use majuscule letters where they belong – at the start of sentences, and for proper nouns.