Choose the appropriate word which can be substituted for the given sentence: 'One who knows everything'.

Choose the appropriate word which can be substituted for the given sentence: 'The points to be discussed at a meeting'.

Choose the appropriate word which can be substituted for the given sentence: 'Something that relates to everyone in the world'.

Choose the appropriate word which can be substituted for the given sentence: 'Of outstanding significance'.

Choose the appropriate word which can be substituted for the given sentence: "Necessary enlistment for the military and other services."

Choose the appropriate word which can be substituted for the given sentence: 'One absorbed in his own thoughts and feelings rather than in things outside'.