yes.
'Enlightened' means 'given knowledge' or 'made aware' or 'freed from prejudice'. 'I enlightened him as to the true situation regarding his sister.'
to be aware of the global issues and dificulties.
realistic
Yes they are true in a Dictionary.
No, the opposite of a definition is certainly not always true. That would depend on the definitions and the meaning of the opposite.
True
True
a pig
This is true by definition.
yes.
yes.
yes.