Pops cert out in anticipation (8)
I believe the answer is:
prospect
'anticipation' is the definition.
(thesaurus)
'pops cert out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'pops'+'cert'='popscert'
'popscert' with letters rearranged gives 'PROSPECT'.
'in' is the link.
(Other definitions for prospect that I've seen before include "'Outlook, vista (8)'" , "Outlook or panorama" , "Someone who might buy" , "Expectation" , "Outlook - search for gold" .)