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pre- prefix words
to authorize or give permission in advance
a measure taken in advance to prevent harm
to come before something else in time, order or rank
to say that something will happen before it does
a syllable or word that comes before a root word to change its meaning
to make a decision before you have all the facts
to pay for something before it needs to be paid in full
a test before the real test, usually given to see what is already known
to stop something from happening before it occurs
to look at or see something before someone else