Hi Sweda,
Welcome to A2K, it's nice to meet you
The clues you need help with are from Lovatts Holiday Collection no.56- The Stinker. ( It is a great help to us if you also give which book and puzzle the clues are from, just in case any of the letters you have given us for reference are incorrect. :wink: )
216A. Smoulder - 'Glow'
233A. Slope - 'Tilt'
192D. Non-identical (twins) - 'Dizygotic'
217D. Intelligence - 'Wits' (Same as Hingehead :wink:)
269D. Unit of phone traffic intensity - 'Erlang'
Hope this helps. Post again if you get stuck.
Good luck in the competition Sweda!
Regards, Butterfly