faster

The word “faster” means the comparative form of "fast" — moving with greater speed. In plain terms, more quick than something else being compared.

“Faster” is pronounced FAHS-tuh (/ˈfæstɚ/ in IPA).

Here is “faster” used in a sentence: “This model of car is faster than the last one.”

“Faster” is an adjective.

“Faster” is a fairly common word in modern English.

In everyday use they are almost interchangeable, but there is a slight nuance. Faster usually refers to speed over a distance, like a faster runner or car. Quicker often refers to a shorter time or prompter action, like a quicker reply. Both are correct comparatives, and most people use them without any real distinction.

'Faster' is correct; 'more fast' is not standard English. Short adjectives like 'fast' form their comparative by adding '-er' rather than using 'more'. The same rule gives 'quicker' and 'slower'. You only use 'more' with longer adjectives, such as 'more rapid' or 'more efficient', where adding '-er' would sound wrong.

The opposite of faster is 'slower', the comparative of 'slow'. Where faster means moving with greater speed, slower means moving with less. Related contrasts include 'more gradual' or 'more sluggish', but 'slower' is the direct and natural opposite in almost every context.