Select the most appropriate word for the given group of words.

Persons who rob ships

SHALLOW

EXTRICATE

ANNEXURE 

Choose the word which is most nearly the same in meaning as the word given in capital letters:

ASSIMILATE

Choose the word which is most nearly the same in meaning as the word given in capital letters:

QUELL

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word. 

Esoteric

Choose the word which is most nearly the same in meaning as the word given in capital letters:

CONSUMMATION