Prefix (re-, pre-,mis-, un-)

The prefix 're-' means 'again' or 'back'. For example, 'rewrite' means to write again.

The prefix 'pre-' means 'before'. For example, 'preteen' refers to the time before becoming a teenager.

The prefix 'mis-' means 'wrong' or 'badly'. For example, 'misread' means to read something incorrectly.

The prefix 'un-' means 'not' or 'opposite of'. For example, 'untidy' means not tidy.

An example is 'reread', which means to read again.

An example is 'preread', which means to read something before the main reading.

An example is 'misunderstand', which means to understand something incorrectly.

An example is 'unhappy', which means not happy.

'Misread' means to read something in a wrong way.

'Untidy' means not neat or messy.