We don't have synonyms for lookahead yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are look ahead, look-ahead and loop head.
(n) :
(regular expressions) The analysis of the subsequent characters before the regular expression is matched.
(n) :
(computing, software compilation) The analysis in advance of subsequent decisions that would be made if a particular branch of an algorithm was followed.
(n) :
(regular expressions) The analysis of the subsequent characters before the regular expression is matched.
(n) :
(computing, software compilation) The analysis in advance of subsequent decisions that would be made if a particular branch of an algorithm was followed.