questions in the Telegraph general knowledge crossword

[mdenning]

please can you help - 4 left


10 across 8 letters we have -g---e-t
A word for the approval of a diplomat sent to it

20 across - high close fitting garment 10 letters we have t-----g-c-

6 down showing a high degree of refinement 6 letters s-e-t-

thanks

[quinie]

6d svelte

[JoolsTwo]

10a Agrement
20a Turtle Neck
6d Svelte

[Ndola]

20 across Turtleneck
6 down Svelte
I have found those so far