To utter what one is thinking. / (idiomatic) To voice one's ideas; to brainstorm.

(politics, historical) The doctrine put forth by Mikhail Gorbachev as part of his reforms of the Soviet Union. Its major elements were international collaboration, priority of universal human interests over the interests of any class, and mutual security based on political rather than military instruments.

to be egoistical

Alternative form of blue-sky thinking

Alternative form of think aloud protocol

I believe that is the case, but am not certain.

(idiomatic) Thinking that is not grounded or in touch with the realities of the present; open-minded thinking.

used after a statement to indicate an emphatic or ironic negative

(slang) Synonym of think with one's little head

in one's opinion; as far as one is concerned