Explain  v. 1 a make clear or intelligible (also absol.: let me explain). B make known in detail. 2 (foll. By that) say by way of explanation. 3 account for (one's conduct etc.).  explain away minimize the significance of by explanation. Explain oneself 1 make one's meaning clear. 2 give an account of one's motives or conduct. [latin explano from planus flat]