wacky
adjective informal (UK also whacky) uk/ˈwæk.i/ us/ˈwæk.i/
滑稽的；古怪的
unusual in a pleasing and exciting or silly way
The book contains some weird and wacky ideas for teaching kids about science. 这本书是关于如何教授小孩科学知识的，有一些奇怪又滑稽的想法。
Synonyms: batty bonkers cockamamie crackers crazy (NOT SENSIBLE)goofy kooky loco loony