► clear expressed in a simple and direct way so that people understand: The game comes with clear instructions. The test questions weren’t very clear.
► plain simple, clear, direct, and easy to understand: She told him in plain language to sign the contract or leave.
► unambiguous formal completely clear because of having only one possible meaning: His refusal to help was unambiguous.
► explicit formal very clearly said or written and including every detail: She gave us explicit instructions about what to do in an emergency.
► understandable possible for people to understand: Business letters need to be written in a way that is understandable so that people do not do the wrong thing.