Always try toplan ahead(= make plans before you need to act).
Synonyms and examplesbeforeI was sure I’d seen her face before.
beforehandHe knew beforehand that his speech would anger many people.
previouslyShe has previously denied the accusations.
in advanceYou should prepare your ingredients in advance.
ahead of timemainlyUSTry to arrive at the airport ahead of time to minimize the possibility of delays.
Antonym and exampleafterwardsmainlyUKRight now I need to cook dinner, but I'll get to the wash afterwards.
Go to the thesaurus article about these synonyms and antonyms ofahead.
See alsoprior to
in advance offormal
ahead of
by
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The prepositionbeforeshows that one event happens earlier than another. Before is also ad adverb meaningat an earlier time.