What is the synonym of the word 'vigilant'?

Select the incorrect pair of synonyms. 

Select the most appropriate synonym of the given word.

Random

Complete the sentence with an appropriate synonym of the word mentioned in the bracket.

If you're feeling brave, try this ___________ (savoury) dish made by me.

Select the most appropriate ANTONYM of the given word.
Obedient 

The synonym of 'grotesque' is

Select the most appropriate synonym of the given word.
Malign

Select the most appropriate synonym of the given word.

Satiate