2.
Complex Has many parts or details and is difficult to understand
3.
Immense Very large and vast
4.
Obstinate Refuses to change one’s mind or opinion
5.
Pristine In its original clean unspoiled condition
6.
Arduous Needing great effort or difficulty
9.
Hazardous Full of danger or risks
10.
Renowned Famous in a good way
11.
Serene Calm and peaceful
12.
Furious Very angry or enraged
14.
Compliment To praise someone
15.
Anticipate To expect something to happen
