What does it mean when someone is flakey?

When someone is described as "flaky," it typically means they are unreliable or inconsistent in their behavior, often failing to follow through on commitments or plans. This can manifest as frequently canceling plans at the last minute, being indecisive, or not responding to messages. Flakiness can be frustrating for others, as it suggests a lack of consideration or seriousness about relationships or responsibilities.