From Longman Dictionary of Contemporary Englishthink something ↔ out phrasal verbTHINK ABOUTto think about all the parts of something carefully before deciding or planning exactly what to do He went for a walk to think things out. The proposal needs to be carefully thought out.think out what/how/whether etc She had thought out what she was going to say. → think→ See Verb table
Examples from the Corpus
think out• In the sunlight of the next morning Maggie decided to go off by herself and think it all out.• Let's simmer down and think things out.• He goes into the same song, our song, I think, looking out at his flaky audience.• I think I was out for an hour-but it could have been more than that, it could have been less.• I thought this constituted revenge of a fairly high order, thought it all out in advance.• I try to think my way out of it.• Chuck, I been thinking I sold out the truth last night when I said your slavery was a country thing.• I still think they're out there.think out what/how/whether etc• But she is essentially faced with thinking out what she believes truth to be.• Lessons went wrong, of course, but not often because the students had failed to think out what they wanted to do. 