1. Uncertain or unreliable: If something is sketchy, it is not certain or reliable. For example, you might say that a rumor is sketchy if you are not sure whether or not it is true.
2. Suspicious or untrustworthy: If someone or something is sketchy, you may suspect them of doing something wrong or illegal. For example, you might say that a person who is always trying to sell you something is sketchy.
3. Poorly made or incomplete: If something is sketchy, it is not well-made or complete. For example, you might say that a drawing is sketchy if it is not very detailed.
4. Vague or unclear: If something is sketchy, it is not clear or precise. For example, you might say that a plan is sketchy if it does not provide a lot of details.
In general, sketchy is a negative adjective that is used to describe something that is not good or reliable.