Permit to go naive and flimsy (5,5)
I believe the answer is:
green light
'permit to' is the definition.
I can't judge whether this defines the answer.
'naive and flimsy' is the wordplay.
'naive' becomes 'green' (similar in meaning).
'and' says to put letters next to each other.
'flimsy' becomes 'light' (I've seen this before).
'green'+'light'='GREEN LIGHT'
'go' is the link.
Can you help me to learn more?
(Other definitions for green light that I've seen before include "Sanction" , "What one has to go on" , "Signal for go" , "Go-ahead" , "OK" .)