ASSAIL is the opposite of

Question

Quizplus · Accepted Answer

The opposite of assail would be aid:
Assail: to attack or assault
I was assailed! That person punched me in the face!
Aid: to provide help
The first responder came to my aid after I had been assailed by the mugger. 
The meanings of the remaining answer choices are similar to the meaning of the word 'labyrinth':
Attack: to charge or advance violently
A surfer was attacked by a shark at the beach today.
Assault: an attack
I was verbally assaulted by the angry stranger.
Invade: to aggressively take over and occupy a place
The troops will invade enemy territory tonight under the cover of darkness.
Charge: to violently rush at or attack an opponent
The opposing warriors charged at each other.

ASSAIL Is the Opposite of