“Timidity” refers to a lack of courage or confidence.
Let’s analyze the options:
(A) Cunning – means being clever in a deceptive way; unrelated.
(B) Boldness – means bravery and confidence; exact opposite of timidity.
(C) Arrogance – refers to overbearing pride; not an antonym.
(D) Skillfulness – refers to having skill, not related to confidence directly.
Thus, the correct antonym is (B) Boldness.