Definition of ahead adverb from the Oxford Advanced Learner's Dictionary

      

    ahead

     adverb
    adverb
    BrE BrE//əˈhed//
     
    ; NAmE NAmE//əˈhed//
     
    For the special uses of ahead in phrasal verbs, look at the entries for the verbs. For example press ahead (with something) is in the phrasal verb section at press.
     
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  1. 1  further forward in space or time; in front I'll run ahead and warn them. The road ahead was blocked. We've got a lot of hard work ahead. This will create problems in the months ahead. He was looking straight ahead (= straight forward, in front of him).
  2. 2  earlier synonym in advance The party was planned weeks ahead.
  3. 3  winning; further advanced Our team was ahead by six points. You need to work hard to keep ahead.
  4. Word Origin mid 16th cent. (originally in nautical use): from a- ‘in, at’ + head.
See the Oxford Advanced American Dictionary entry: ahead