There are various synonyms for the phrase "know a little," including a basic understanding, be acquainted with, have a glimpse, have a rudimentary knowledge or grasp of, have a smattering, have some familiarity, know some details, possess limited knowledge, have scant knowledge, have a superficial understanding, and be slightly familiar with. Often, when we are trying to communicate with someone who has a limited understanding of a particular topic, it helps to use phrases that convey the idea that we are not expecting them to know everything, but rather just have a cursory understanding. Choosing the right synonym can help to create a more positive and inclusive conversation, making the other person feel more comfortable and valued.