presentable
Neat and tidy enough to show to other people.
Presentable means looking neat, clean, and appropriate enough to be seen by others without embarrassment. When you're presentable, you've made yourself look tidy and put-together for the situation you're in.
Before guests arrive, your mom might ask you to make your room presentable, meaning you should pick up dirty clothes, straighten the bed, and clear the clutter so visitors won't see a mess. Before a school presentation, you'd want to make yourself presentable: comb your hair, tuck in your shirt, and make sure you don't have lunch on your face.
Being presentable doesn't mean you need to look fancy or perfect. It means you look appropriate for what you're doing. Presentable for playing soccer is different from presentable for a piano recital. What matters is that you've taken care to look reasonably neat for the context.
The word suggests you've crossed a basic threshold of tidiness. Your science project might not be the most creative in the class, but if it's presentable, it's organized and complete enough to show your teacher. A presentable essay has been proofread and formatted properly, even if the ideas could be stronger.
When someone says something is “barely presentable,” they mean it just meets the minimum standard of acceptability.