Working together, architects finally plan green city (10)

I believe the answer is:

synergetic

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

'working together architects finally plan green city' is the definition.
I can't judge whether this definition defines the answer.

'architects finally plan green city' is the wordplay.
'finally' says to take the final letters.
'plan' is an anagram indicator (I've seen this in other clues).
The last letter of 'architects' is 's'.
'green'+'city'='greencity'
'greencity' anagrammed gives 'ynergetic'.
's'+'ynergetic'='SYNERGETIC'

Can you help me to learn more?

I've seen this clue in The Hindu.

Want a hint initially instead of a full solution? Install my app