Here's the answer:
“大変！”
(taihen!)
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning Japanese with Memrise get this phrase correct 93.11% of the time!
(taihen!)
Fun fact: the hundreds of thousands of people learning Japanese with Memrise get this phrase correct 93.11% of the time!
