17 across
Show
up
abruptly
at
trade
shows
(5)
Show up abruptly at trade shows (5)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at trade shows at the end — that's your definition, since EXPOS is the short form for those big exhibitions. For the wordplay, "show up" gives you EXPOSE (as in reveal), and "abruptly" is the hint to lop off its last letter, leaving EXPOS.