1. superlative form of correct; most accurate, right, or free from error
Usage: archaic or formal superlative; modern usage typically prefers 'most correct'

Examples

• Of all the answers on the test, hers was the correctest.
• The correctest pronunciation of that word is with the stress on the first syllable.
• He believed his interpretation was the correctest one available.
• Among the proposed solutions, this approach seemed the correctest.
• The correctest way to address the problem is to start from the beginning.