earnest

An earnest person is someone who means what they say and does what they promise.

When we call someone "earnest", it usually means that they are sincere and genuine. They don't try to hide their true feelings or intentions, but instead speak from the heart and do things with integrity. For example, if you ask a friend to help you move and they show up right on time, even though it's a big job, we might say they were "earnest" about helping out. We can also use earnest in phrases like "an earnest attempt", where someone is trying their best to achieve something. In this sense, earnest has a slightly different nuance - it's not just about being sincere, but also about putting in effort and dedication.