Current mass fashion on street is quite indecent! (8)

I believe the answer is:

immodest

I'm a little stuck... Click here to teach me more about this clue!

'quite indecent' is the definition.
'immodest' can be an answer for 'indecent' (similar in meaning). I am not sure about the 'quite' bit.

'current mass fashion on street' is the wordplay.
'current' becomes 'I' (physics symbol).
'mass' becomes 'm' (symbol used in Physics e.g. f=ma).
'fashion' becomes 'mode' (synonyms).
'on' is a charade indicator (letters next to each other).
'street' becomes 'st' (abbreviation).
'i'+'m'+'mode'+'st'='IMMODEST'

'is' is the link.

Can you help me to learn more?

(Other definitions for immodest that I've seen before include "bold" , "Lacking decency, shameless" , "Lacking due decency" , "Not humble or decorous" , "Not seemly or decently dressed" .)

I've seen this clue in The Irish Times.

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