read in

The idiom "look into" is closely related to "read in," as both idioms involve gathering information or understanding a situation. "Look into" refers to the act of investigating something or examining it closely to gain more knowledge or insight. Just as "read in" implies interpreting and understanding information, "look into" suggests a deeper examination or exploration of a subject. These idioms share a common theme of acquiring information and gaining a deeper understanding of a particular topic or situation.

"Read someone's mind" is another idiom that relates to "read in." This phrase is often used to describe the ability to understand someone's thoughts or intentions without them explicitly stating them. It implies a level of insight or intuition, as if one can "read" the thoughts or emotions of another person. While "read in" focuses more on the act of interpreting information or understanding implications, "read someone's mind" delves into the realm of perceiving and comprehending another person's inner thoughts and feelings.