False pride— it reveals rough water (4,3)
I believe the answer is:
tide rip
'rough water' is the definition.
(I've seen this before)
'false pride-it' is the wordplay.
'false' indicates anagramming the letters.
'pride'+'it'='prideit'
'prideit' is an anagram of 'TIDE-RIP'.
'reveals' is the link.
(Other definitions for tide rip that I've seen before include "rough water" , "disturbed sea" , "Disturbance likely in 11 [EURIPUS]" .)