This is the 5749th most frequent Japanese word.
とく
"とく" means "to unravel, solve, explain, or untie."
Here, 'とく' means to solve or answer, typically used for problems or questions.
彼は宿題をとくのが得意だ。
He is skilled at solving homework.
In this context, 'とく' means to resolve or eliminate, used for issues or problems.
この薬は病気をとく効果がある。
This medicine has the effect of remedying the illness.
Here, 'とく' means to resolve or clear up something, such as doubts or questions.