Pressing information interrupts departure (7)
I believe the answer is:
exigent
'pressing' is the definition.
(synonyms)
'information interrupts departure' is the wordplay.
'information' becomes 'gen' (gen can informally mean information).
'interrupts' is an insertion indicator.
'departure' becomes 'exit' (synonyms).
'gen' going within 'exit' is 'EXIGENT'.
(Other definitions for exigent that I've seen before include "Exacting, requiring much" , "Pressing; demanding" , "Demanding immediate attention" , "Urgent and exacting" , "Urgent and taxing" .)