Formal:
* ยอดเยี่ยม (yoht yiam) - This is the most formal and general way to say "wonderful".
* วิเศษ (wiset) - This is another formal option, meaning "excellent" or "superb".
Informal:
* สุดยอด (soot yot) - This is a very common and informal way to say "amazing" or "awesome".
* ดีมาก (dee mahk) - This means "very good" and can also be used to express appreciation.
* น่ารัก (na rahk) - This means "cute" or "lovely" and can be used to describe something that is aesthetically pleasing or enjoyable.
Other options:
* งดงาม (ngong daam) - This means "beautiful" and can be used to describe something that is visually appealing.
* ประเสริฐ (bpra sert) - This means "excellent" or "superior" and is a more literary or poetic way to say "wonderful".
The best way to choose the right word depends on the situation. For example, if you are talking to a stranger, you might use "ยอดเยี่ยม" or "วิเศษ". If you are talking to a friend, you might use "สุดยอด" or "ดีมาก".