What does pugnacious mean in the following sentence:

Walt’s pugnacious behavior in the boxing ring made his opponent back down.

Which words help the reader know what arbitrator means:

The arbitrator, the neutral person chosen to settle the dispute, arrived at her

decision.

Which words help the reader know what noxious means:

The river was full of noxious materials such as cleaning agents from factories and pesticides from the nearby farms.

What does the word immaculate mean?

Unlike Jamaal’s room, which was immaculate, Jeffrey’s room was very messy.

Which word has the closest meaning to the underlined word?

The river was full of noxious materials such as cleaning agents from factories and pesticides from the nearby farms.