a·head

[uh-hed]
adverb
1.
in or to the front; in advance of; before: Walk ahead of us.
2.
in a forward direction; onward; forward: The line of cars moved ahead slowly.
3.
into or for the future: Plan ahead.
4.
so as to register a later time: to set the clock ahead.
5.
at or to a different time, either earlier or later: to push a deadline ahead one day from Tuesday to Monday; to push a deadline ahead one day from Tuesday to Wednesday.
6.
onward toward success; to a more advantageous position; upward in station: There's a young man who is sure to get ahead.
Relevant Questions
7.
ahead of,
a.
in front of; before: He ran ahead of me.
b.
superior to; beyond: materially ahead of other countries.
c.
in advance of; at an earlier time than: We got there ahead of the other guests.
8.
be ahead,
a.
to be winning: Our team is ahead by two runs.
b.
to be in a position of advantage; be benefiting: His score in mathematics is poor, but he's ahead in foreign languages.
00:10
Ahead is always a great word to know.
So is interrobang. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.

Origin:
1590–1600; a-1 + head

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
ahead (əˈhɛd) [Click for IPA pronunciation guide]
 
adj
1.  (postpositive) in front; in advance
 
adv
2.  at or in the front; in advance; before
3.  onwards; forwards: go straight ahead
4.  ahead of
 a.  in front of; at a further advanced position than
 b.  stock exchange in anticipation of: the share price rose ahead of the annual figures
5.  informal be ahead to have an advantage; be winning: to be ahead on points
6.  get ahead to advance or attain success

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

ahead
1620s, "at the head, in front," from a- "on" (see a- (1)) + head.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
AHEAD
Association on Higher Education and Disability
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
American Heritage
Idioms & Phrases

ahead

In addition to the idioms beginning with ahead, also see come out ahead; dead ahead; full speed ahead; get ahead; go ahead; one jump ahead; quit while one's ahead.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
They say that while volatility increases at the beginning of a crisis, it is
  unreliable as a leading indicator of trouble ahead.
We think society moves forward, generation after generation, ahead and ahead
  and ahead.
Determined to go ahead with the session, he played the piano himself.
Click ahead for some of our favorite picks for the cool season.
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