HSK 7-9
确信
quèxìn动
to be convinced; to be sure; to firmly believe; to be positive that
我确信这个判断没有错。
Wǒ quèxìn zhège pànduàn méiyǒu cuò.
I am certain that this judgment is correct.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.