HSK 6
质疑
zhìyí动
to call into question; to challenge (the truth or validity of)
几位专家公开质疑这项结论。
Jǐ wèi zhuān jiā gōng kāi zhì yí zhè xiàng jié lùn.
Several experts publicly questioned this conclusion.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 6.