त्रुटि : मोठी चूक : : _______ : उत्कृष्ट A. स्वीकार्य B. श्रेष्ठ असणे C. असमाधानकारक D. भव्य

A blunder is a big, serious error, a stronger form of 'error'. In the same way, 'excellent' is a stronger form of 'splendid' — the pair moves from a word to a more intense version of it.