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think something through
to run over and try to settle something in one's mind. Let me think this through and call you in the morning. I will think through this matter and get back to you.
think something throughalso think through something
to consider something carefully, esp. before making an important decision think something over We can't afford a mistake, so think things through and make sure you have everything ready. You should think through all these questions before you send your proposal to a publisher.
Usage notes: also used in the form think out something: He's trying to think out all the options available before deciding on one.
Also, think out. Arrive at a thorough understanding of; devise or contrive thoroughly. For example, That answer doesn't work; I don't believe you've thought the problem through, or He thought out a far more efficient method. The first term dates from the early 1900s, the variant from the mid-1800s. Also see think up.
To reason about or reflect on something, considering every detail and consequence: Make sure you think through the consequences before you act. Don't make the decision to quit your job right away—think the matter through.