hazardous (Adjective) : involving risk or danger
dangerous (Adjective) : likely to injure or harm to damage or destroy somebody/ something
safe (Adjective) : protected from any danger
strong (Adjective) : having a lot of physical power to do hard physical work
secure (Adjective) : feeling happy and confident about yourself or a particular situation; safe

Correct Option: C

hazardous (Adjective) : involving risk or danger
dangerous (Adjective) : likely to injure or harm to damage or destroy somebody/ something
safe (Adjective) : protected from any danger
strong (Adjective) : having a lot of physical power to do hard physical work
secure (Adjective) : feeling happy and confident about yourself or a particular situation; safe

stubborn (Adjective) : obstinate; determined not to change your opinion or attitude
obstinate (Adjective) : stubborn
antagonistic (Adjective) : a person who strongly opposes; opponent
abstruse (Adjective) : difficult to understand
intrinsic (adjective) : belonging to or a part of real nature

Correct Option: D

stubborn (Adjective) : obstinate; determined not to change your opinion or attitude
obstinate (Adjective) : stubborn
antagonistic (Adjective) : a person who strongly opposes; opponent
abstruse (Adjective) : difficult to understand
intrinsic (adjective) : belonging to or a part of real nature

unlawful (Adjective) : illegal; not allowed by law
illicit (Adjective) : not allowed by law; illegal
disgraceful (Adjective) : very bad or unacceptable
improper (Adjective) : inappropriate ; dishonest or morally wrong
infamous (Adjective) : well – known for being bad or evil; notorious

Correct Option: A

unlawful (Adjective) : illegal; not allowed by law
illicit (Adjective) : not allowed by law; illegal
disgraceful (Adjective) : very bad or unacceptable
improper (Adjective) : inappropriate ; dishonest or morally wrong
infamous (Adjective) : well – known for being bad or evil; notorious

irritable (Adjective) : becoming very angry; bad–tempered
irascible (Adjective) : becoming angry very easily; irritable
temperamental (Adjective) : having a tendency to become angry, excited or upset easily
envious(Adjective) : wanting to be in the same position as somebody else
angry (Adjective) : having strong feeling about something that you dislike

Correct Option: D

irritable (Adjective) : becoming very angry; bad–tempered
irascible (Adjective) : becoming angry very easily; irritable
temperamental (Adjective) : having a tendency to become angry, excited or upset easily
envious(Adjective) : wanting to be in the same position as somebody else
angry (Adjective) : having strong feeling about something that you dislike

indiscriminate (Adjective) : acting without careful judgement
promiscuous (Adjective) : taken from a wide range of sources, without a careful thought
conspicuous (Adjective) : easy to see or notice; likely to attract attention
virtuous (Adjective) : behaving in a very good and moral way
spontaneous (Adjective) : not planned but done suddenly

Correct Option: C

indiscriminate (Adjective) : acting without careful judgement
promiscuous (Adjective) : taken from a wide range of sources, without a careful thought
conspicuous (Adjective) : easy to see or notice; likely to attract attention
virtuous (Adjective) : behaving in a very good and moral way
spontaneous (Adjective) : not planned but done suddenly